[{"extern":"1","abstract":[{"text":"Several recent experimental and theoretical studies have demonstrated the importance of exciton/exciton coupling due to Coulomb interactions for the nonlinear optical response of the 2D exciton in GaAs quantum wells (QWs).1,2 These results imply that multilevel models are required in order to provide a theoretically appropriate description of the nonlinear behavior. Previous application of a renormalized 9-level system has proven successful in describing the third-order response of hh-excitons in GaAs quantum wells.2 We present a comprehensive experimental and theoretical investigation of the polarization selection rules for degenerate- four-wave-mixing (DFWM) and quantum beating of hh and lh transitions in a GaAs QW. Depending on the polarization and temporal sequence of the three pulses simultaneous excitation of the hh and lh transitions generates either quantum beats (QB), no modulation of the signal, or a superposition of QB and polarization interference (PI) effects as proved by spectrally resolved (SR)-DFWM.","lang":"eng"}],"citation":{"mla":"Meier, Torsten, et al. “Polarization Selection Rules for Quantum Beating between Light and Heavy Holes in GaAs Quantum Wells.” <i>Proceedings of the 5th European Quantum Electronics Conference</i>, 1994, pp. 187–88.","ama":"Meier T, Mayer EJ, Smith GO, et al. Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells. In: <i>Proceedings of the 5th European Quantum Electronics Conference</i>. ; 1994:187-188.","bibtex":"@inproceedings{Meier_Mayer_Smith_Kuhl_Schulze_Bennhardt_Koch_Thomas_Hey_Ploog_1994, title={Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells}, booktitle={Proceedings of the 5th European Quantum Electronics Conference}, author={Meier, Torsten and Mayer, E.J. and Smith, G.O. and Kuhl, J. and Schulze, A. and Bennhardt, D. and Koch, S.W. and Thomas, P. and Hey, R. and Ploog, K.}, year={1994}, pages={187–188} }","apa":"Meier, T., Mayer, E. J., Smith, G. O., Kuhl, J., Schulze, A., Bennhardt, D., Koch, S. W., Thomas, P., Hey, R., &#38; Ploog, K. (1994). Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells. <i>Proceedings of the 5th European Quantum Electronics Conference</i>, 187–188.","ieee":"T. Meier <i>et al.</i>, “Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells,” in <i>Proceedings of the 5th European Quantum Electronics Conference</i>, Amsterdam, Netherlands, 1994, pp. 187–188.","short":"T. Meier, E.J. Mayer, G.O. Smith, J. Kuhl, A. Schulze, D. Bennhardt, S.W. Koch, P. Thomas, R. Hey, K. Ploog, in: Proceedings of the 5th European Quantum Electronics Conference, 1994, pp. 187–188.","chicago":"Meier, Torsten, E.J. Mayer, G.O. Smith, J. Kuhl, A. Schulze, D. Bennhardt, S.W. Koch, P. Thomas, R. Hey, and K. Ploog. “Polarization Selection Rules for Quantum Beating between Light and Heavy Holes in GaAs Quantum Wells.” In <i>Proceedings of the 5th European Quantum Electronics Conference</i>, 187–88, 1994."},"publication":"Proceedings of the 5th European Quantum Electronics Conference","department":[{"_id":"293"}],"type":"conference","date_created":"2023-05-01T11:41:01Z","publication_status":"published","date_updated":"2023-05-01T11:41:04Z","author":[{"id":"344","full_name":"Meier, Torsten","orcid":"0000-0001-8864-2072","first_name":"Torsten","last_name":"Meier"},{"last_name":"Mayer","first_name":"E.J.","full_name":"Mayer, E.J."},{"full_name":"Smith, G.O.","first_name":"G.O.","last_name":"Smith"},{"full_name":"Kuhl, J.","last_name":"Kuhl","first_name":"J."},{"last_name":"Schulze","first_name":"A.","full_name":"Schulze, A."},{"full_name":"Bennhardt, D.","first_name":"D.","last_name":"Bennhardt"},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"full_name":"Hey, R.","first_name":"R.","last_name":"Hey"},{"full_name":"Ploog, K.","first_name":"K.","last_name":"Ploog"}],"conference":{"start_date":"1994-08-28","name":"European Quantum Electronics Conference 1994","location":"Amsterdam, Netherlands","end_date":"1994-09-02"},"status":"public","year":"1994","title":"Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells","user_id":"49063","_id":"44284","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=EQEC-1994-QThB4"}],"page":"187-188"},{"date_updated":"2023-05-01T11:33:25Z","publication_status":"published","year":"1994","title":"Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells","status":"public","conference":{"location":"California, United States","start_date":"1994-05-02","name":"International Conference on Ultrafast Phenomena 1994","end_date":"1994-05-06"},"author":[{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Mayer, E.J.","first_name":"E.J.","last_name":"Mayer"},{"full_name":"Smith, G.O.","last_name":"Smith","first_name":"G.O."},{"full_name":"Kuhl, J.","first_name":"J.","last_name":"Kuhl"},{"last_name":"Bennhardt","first_name":"D.","full_name":"Bennhardt, D."},{"last_name":"Schulze","first_name":"A.","full_name":"Schulze, A."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"first_name":"R.","last_name":"Hey","full_name":"Hey, R."},{"first_name":"K.","last_name":"Ploog","full_name":"Ploog, K."}],"user_id":"49063","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=UP-1994-ThD.22"}],"article_number":"ThD.22","_id":"44282","language":[{"iso":"eng"}],"abstract":[{"text":"Although the importance of exciton/exciton interactions for the nonlinear optical response of GaAs quantum wells (QW) is well established by many experimental observations, the role of biexciton states in these processes is still an open question, even at low excitation densities. Evidence for the formation of biexcitons has been independently derived from pump-probe studies [1], from the density dependence of the photoluminescence (PL) line shape [2] and from signal modulations observed in degenerate-four-wave-mixing (DFWM) with incoherent light pulses [3]. Here, we report on time-resolved DFWM with parallel (PP) and cross-polarized (CP) pulses. Depending on the polarization geometry, the signals reveal strong quantum beats which correspond to the splitting between either the heavy hole (hh) and light hole (lh) exciton or the hh exciton and the biexciton.","lang":"eng"}],"extern":"1","publication":"International Conference on Ultrafast Phenomena","citation":{"mla":"Meier, Torsten, et al. “Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells.” <i>International Conference on Ultrafast Phenomena</i>, ThD.22, 1994.","bibtex":"@inproceedings{Meier_Mayer_Smith_Kuhl_Bennhardt_Schulze_Thomas_Hey_Ploog_1994, title={Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells}, number={ThD.22}, booktitle={International Conference on Ultrafast Phenomena}, author={Meier, Torsten and Mayer, E.J. and Smith, G.O. and Kuhl, J. and Bennhardt, D. and Schulze, A. and Thomas, P. and Hey, R. and Ploog, K.}, year={1994} }","ama":"Meier T, Mayer EJ, Smith GO, et al. Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells. In: <i>International Conference on Ultrafast Phenomena</i>. ; 1994.","ieee":"T. Meier <i>et al.</i>, “Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells,” presented at the International Conference on Ultrafast Phenomena 1994, California, United States, 1994.","apa":"Meier, T., Mayer, E. J., Smith, G. O., Kuhl, J., Bennhardt, D., Schulze, A., Thomas, P., Hey, R., &#38; Ploog, K. (1994). Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells. <i>International Conference on Ultrafast Phenomena</i>, Article ThD.22. International Conference on Ultrafast Phenomena 1994, California, United States.","short":"T. Meier, E.J. Mayer, G.O. Smith, J. Kuhl, D. Bennhardt, A. Schulze, P. Thomas, R. Hey, K. Ploog, in: International Conference on Ultrafast Phenomena, 1994.","chicago":"Meier, Torsten, E.J. Mayer, G.O. Smith, J. Kuhl, D. Bennhardt, A. Schulze, P. Thomas, R. Hey, and K. Ploog. “Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells.” In <i>International Conference on Ultrafast Phenomena</i>, 1994."},"type":"conference","department":[{"_id":"293"}],"date_created":"2023-05-01T11:33:22Z"},{"author":[{"id":"344","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"full_name":"Koch, M.","first_name":"M.","last_name":"Koch"},{"full_name":"Stolz, W.","first_name":"W.","last_name":"Stolz"},{"full_name":"Feldmann, J.","last_name":"Feldmann","first_name":"J."},{"last_name":"Thomas","first_name":"P.","full_name":"Thomas, P."},{"last_name":"Göbel","first_name":"E.O.","full_name":"Göbel, E.O."}],"title":"Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy","year":"1994","intvolume":"        15","date_updated":"2023-05-01T11:37:06Z","publication_status":"published","series_title":"Superlattices and microstructures","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.sciencedirect.com/science/article/abs/pii/S0749603684710640"}],"doi":"10.1006/spmi.1994.1064","publication":"Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices","issue":"3","abstract":[{"text":"We have performed sub-picosecond four-wave mixing experiments on a series of symmetrically strained (GaIn)As/Ga(AsP) multiple quantum wells. We show that these measurements allow a precise determination of exciton binding energies. One of the advantages of this quantum beat method as compared to linear optical methods is that a determination of the exciton binding energy is possible even in the presence of considerable inhomogeneous broadening. In addition, the dependence of the exciton binding energy on the strain in the (GaIn)As quantum well layers suggests that the reduced electron-hole effective mass is not influenced by the increase in strain.","lang":"eng"}],"extern":"1","date_created":"2023-04-15T00:05:39Z","department":[{"_id":"293"}],"type":"conference","conference":{"location":"Banff, Canada"},"status":"public","_id":"43600","page":"329-332","volume":15,"user_id":"49063","citation":{"apa":"Meier, T., Koch, M., Stolz, W., Feldmann, J., Thomas, P., &#38; Göbel, E. O. (1994). Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy. <i>Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices</i>, <i>15</i>(3), 329–332. <a href=\"https://doi.org/10.1006/spmi.1994.1064\">https://doi.org/10.1006/spmi.1994.1064</a>","ieee":"T. Meier, M. Koch, W. Stolz, J. Feldmann, P. Thomas, and E. O. Göbel, “Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy,” in <i>Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices</i>, Banff, Canada, 1994, vol. 15, no. 3, pp. 329–332, doi: <a href=\"https://doi.org/10.1006/spmi.1994.1064\">10.1006/spmi.1994.1064</a>.","chicago":"Meier, Torsten, M. Koch, W. Stolz, J. Feldmann, P. Thomas, and E.O. Göbel. “Determination of Excitonic Binding Energies in Symmetrically Strained (GaIn)As/Ga(PAs) Multiple Quantum Wells Using Quantum Beat Spectroscopy.” In <i>Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices</i>, 15:329–32. Superlattices and Microstructures, 1994. <a href=\"https://doi.org/10.1006/spmi.1994.1064\">https://doi.org/10.1006/spmi.1994.1064</a>.","short":"T. Meier, M. Koch, W. Stolz, J. Feldmann, P. Thomas, E.O. Göbel, in: Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices, 1994, pp. 329–332.","mla":"Meier, Torsten, et al. “Determination of Excitonic Binding Energies in Symmetrically Strained (GaIn)As/Ga(PAs) Multiple Quantum Wells Using Quantum Beat Spectroscopy.” <i>Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices</i>, vol. 15, no. 3, 1994, pp. 329–32, doi:<a href=\"https://doi.org/10.1006/spmi.1994.1064\">10.1006/spmi.1994.1064</a>.","ama":"Meier T, Koch M, Stolz W, Feldmann J, Thomas P, Göbel EO. Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy. In: <i>Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices</i>. Vol 15. Superlattices and microstructures. ; 1994:329-332. doi:<a href=\"https://doi.org/10.1006/spmi.1994.1064\">10.1006/spmi.1994.1064</a>","bibtex":"@inproceedings{Meier_Koch_Stolz_Feldmann_Thomas_Göbel_1994, series={Superlattices and microstructures}, title={Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy}, volume={15}, DOI={<a href=\"https://doi.org/10.1006/spmi.1994.1064\">10.1006/spmi.1994.1064</a>}, number={3}, booktitle={Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices}, author={Meier, Torsten and Koch, M. and Stolz, W. and Feldmann, J. and Thomas, P. and Göbel, E.O.}, year={1994}, pages={329–332}, collection={Superlattices and microstructures} }"}},{"author":[{"id":"344","orcid":"0000-0001-8864-2072","first_name":"Torsten","last_name":"Meier","full_name":"Meier, Torsten"},{"last_name":"von Plessen","first_name":"G.","full_name":"von Plessen, G."},{"full_name":"Feldmann, J.","last_name":"Feldmann","first_name":"J."},{"first_name":"E.O.","last_name":"Göbel","full_name":"Göbel, E.O."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"first_name":"K.W.","last_name":"Goossen","full_name":"Goossen, K.W."},{"full_name":"Kuo, J.M.","first_name":"J.M.","last_name":"Kuo"},{"full_name":"Kopf, R.F.","first_name":"R.F.","last_name":"Kopf"}],"publication_identifier":{"isbn":["1-55752-342-8"]},"conference":{"location":"Anaheim, California United States","name":"International Quantum Electronics Conference 1994","start_date":"1994-05-08","end_date":"1994-05-13"},"title":"Field-induced dynamics of a wave packet in a wide superlattice miniband","status":"public","year":"1994","publication_status":"published","date_updated":"2023-05-01T11:30:09Z","_id":"44280","language":[{"iso":"eng"}],"article_number":"QMC7","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=IQEC-1994-QMC7"}],"user_id":"49063","citation":{"ieee":"T. Meier <i>et al.</i>, “Field-induced dynamics of a wave packet in a wide superlattice miniband,” presented at the International Quantum Electronics Conference 1994, Anaheim, California United States, 1994.","apa":"Meier, T., von Plessen, G., Feldmann, J., Göbel, E. O., Thomas, P., Goossen, K. W., Kuo, J. M., &#38; Kopf, R. F. (1994). Field-induced dynamics of a wave packet in a wide superlattice miniband. <i>International Quantum Electronics Conference</i>, Article QMC7. International Quantum Electronics Conference 1994, Anaheim, California United States.","short":"T. Meier, G. von Plessen, J. Feldmann, E.O. Göbel, P. Thomas, K.W. Goossen, J.M. Kuo, R.F. Kopf, in: International Quantum Electronics Conference, 1994.","chicago":"Meier, Torsten, G. von Plessen, J. Feldmann, E.O. Göbel, P. Thomas, K.W. Goossen, J.M. Kuo, and R.F. Kopf. “Field-Induced Dynamics of a Wave Packet in a Wide Superlattice Miniband.” In <i>International Quantum Electronics Conference</i>, 1994.","mla":"Meier, Torsten, et al. “Field-Induced Dynamics of a Wave Packet in a Wide Superlattice Miniband.” <i>International Quantum Electronics Conference</i>, QMC7, 1994.","bibtex":"@inproceedings{Meier_von Plessen_Feldmann_Göbel_Thomas_Goossen_Kuo_Kopf_1994, title={Field-induced dynamics of a wave packet in a wide superlattice miniband}, number={QMC7}, booktitle={International Quantum Electronics Conference}, author={Meier, Torsten and von Plessen, G. and Feldmann, J. and Göbel, E.O. and Thomas, P. and Goossen, K.W. and Kuo, J.M. and Kopf, R.F.}, year={1994} }","ama":"Meier T, von Plessen G, Feldmann J, et al. Field-induced dynamics of a wave packet in a wide superlattice miniband. In: <i>International Quantum Electronics Conference</i>. ; 1994."},"publication":"International Quantum Electronics Conference","extern":"1","abstract":[{"lang":"eng","text":"In the absence of scattering mechanisms, a crystal electron subjected to a homogeneous electric field undergoes a periodic motion in both momentum and real space. This oscillatory motion is known as Bloch oscillations (BOs) and has recently been detected in transient four-wave mixing (FWM) and Tera-Hertz emission experiments on semiconductor superlattices. It is generally assumed that the minimum field required for the observation of BOs is controlled by the rate of scattering in the material. However, an experimental verification of this point is still lacking."}],"date_created":"2023-05-01T11:30:06Z","department":[{"_id":"293"}],"type":"conference"},{"publication_status":"published","date_updated":"2023-05-01T11:25:17Z","status":"public","title":"Direct verification of the existence of biexcitons in GaAs qauntum wells","year":"1994","author":[{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Smith, G.O.","last_name":"Smith","first_name":"G.O."},{"full_name":"Mayer, E.J.","last_name":"Mayer","first_name":"E.J."},{"first_name":"J.","last_name":"Kuhl","full_name":"Kuhl, J."},{"full_name":"Schulze, A.","first_name":"A.","last_name":"Schulze"},{"last_name":"Bennhardt","first_name":"D.","full_name":"Bennhardt, D."},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"last_name":"Hey","first_name":"R.","full_name":"Hey, R."},{"full_name":"Ploog, K.","first_name":"K.","last_name":"Ploog"}],"conference":{"end_date":"1994-09-02","start_date":"1994-08-28","name":"European Quantum Electronics Conference 1994","location":"Amsterdam, Netherlands"},"user_id":"49063","article_number":"QThB5","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=EQEC-1994-QThB5"}],"language":[{"iso":"eng"}],"_id":"44279","extern":"1","abstract":[{"text":"The strong nonlinear optical response of the 2D exciton in GaAs quantum wells at relatively low excitation densities has been observed in many experimental studies in accordance with theoretical predictions. In principle, exciton/exciton interaction results in a renormalization of the transition matrix elements, dephasing rates and frequencies of the excitonic states. Wang et al.1 claimed that all experimental results can be explained by a density- induced enhanced dephasing rate. In a previous paper,2 we have suggested a density dependent coupling between opposite spin excitons, which involves all three renormalization phenomena.","lang":"eng"}],"publication":"European Quantum Electronics Conference","citation":{"short":"T. Meier, G.O. Smith, E.J. Mayer, J. Kuhl, A. Schulze, D. Bennhardt, S.W. Koch, P. Thomas, R. Hey, K. Ploog, in: European Quantum Electronics Conference, 1994.","chicago":"Meier, Torsten, G.O. Smith, E.J. Mayer, J. Kuhl, A. Schulze, D. Bennhardt, S.W. Koch, P. Thomas, R. Hey, and K. Ploog. “Direct Verification of the Existence of Biexcitons in GaAs Qauntum Wells.” In <i>European Quantum Electronics Conference</i>, 1994.","apa":"Meier, T., Smith, G. O., Mayer, E. J., Kuhl, J., Schulze, A., Bennhardt, D., Koch, S. W., Thomas, P., Hey, R., &#38; Ploog, K. (1994). Direct verification of the existence of biexcitons in GaAs qauntum wells. <i>European Quantum Electronics Conference</i>, Article QThB5. European Quantum Electronics Conference 1994, Amsterdam, Netherlands.","ieee":"T. Meier <i>et al.</i>, “Direct verification of the existence of biexcitons in GaAs qauntum wells,” presented at the European Quantum Electronics Conference 1994, Amsterdam, Netherlands, 1994.","ama":"Meier T, Smith GO, Mayer EJ, et al. Direct verification of the existence of biexcitons in GaAs qauntum wells. In: <i>European Quantum Electronics Conference</i>. ; 1994.","bibtex":"@inproceedings{Meier_Smith_Mayer_Kuhl_Schulze_Bennhardt_Koch_Thomas_Hey_Ploog_1994, title={Direct verification of the existence of biexcitons in GaAs qauntum wells}, number={QThB5}, booktitle={European Quantum Electronics Conference}, author={Meier, Torsten and Smith, G.O. and Mayer, E.J. and Kuhl, J. and Schulze, A. and Bennhardt, D. and Koch, S.W. and Thomas, P. and Hey, R. and Ploog, K.}, year={1994} }","mla":"Meier, Torsten, et al. “Direct Verification of the Existence of Biexcitons in GaAs Qauntum Wells.” <i>European Quantum Electronics Conference</i>, QThB5, 1994."},"type":"conference","department":[{"_id":"293"}],"date_created":"2023-05-01T11:25:13Z"},{"status":"public","title":"Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets","year":"1994","conference":{"end_date":"1994-05-06","name":"International Conference on Ultrafast Phenomena 1994","start_date":"1994-05-02","location":"California, United States"},"author":[{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072"},{"first_name":"M.","last_name":"Koch","full_name":"Koch, M."},{"full_name":"Jahnke, F.","first_name":"F.","last_name":"Jahnke"},{"last_name":"Feldmann","first_name":"J.","full_name":"Feldmann, J."},{"full_name":"Schäfer, W.","first_name":"W.","last_name":"Schäfer"},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"full_name":"Koch, S.W.","last_name":"Koch","first_name":"S.W."},{"first_name":"E.O.","last_name":"Göbel","full_name":"Göbel, E.O."},{"full_name":"Nickel, H.","last_name":"Nickel","first_name":"H."}],"date_updated":"2023-05-01T11:46:21Z","publication_status":"published","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=UP-1994-TuE.3"}],"article_number":"TuE.3","_id":"44285","language":[{"iso":"eng"}],"doi":"10.1364/UP.1994.TuE.3","user_id":"49063","citation":{"mla":"Meier, Torsten, et al. <i>Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets</i>. TuE.3, 1994, doi:<a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">10.1364/UP.1994.TuE.3</a>.","ama":"Meier T, Koch M, Jahnke F, et al. Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets. In: ; 1994. doi:<a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">10.1364/UP.1994.TuE.3</a>","bibtex":"@inproceedings{Meier_Koch_Jahnke_Feldmann_Schäfer_Thomas_Koch_Göbel_Nickel_1994, title={Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets}, DOI={<a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">10.1364/UP.1994.TuE.3</a>}, number={TuE.3}, author={Meier, Torsten and Koch, M. and Jahnke, F. and Feldmann, J. and Schäfer, W. and Thomas, P. and Koch, S.W. and Göbel, E.O. and Nickel, H.}, year={1994} }","apa":"Meier, T., Koch, M., Jahnke, F., Feldmann, J., Schäfer, W., Thomas, P., Koch, S. W., Göbel, E. O., &#38; Nickel, H. (1994). <i>Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets</i> (TuE.3). Article TuE.3. International Conference on Ultrafast Phenomena 1994, California, United States. <a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">https://doi.org/10.1364/UP.1994.TuE.3</a>","ieee":"T. Meier <i>et al.</i>, “Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets,” presented at the International Conference on Ultrafast Phenomena 1994, California, United States, 1994, doi: <a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">10.1364/UP.1994.TuE.3</a>.","short":"T. Meier, M. Koch, F. Jahnke, J. Feldmann, W. Schäfer, P. Thomas, S.W. Koch, E.O. Göbel, H. Nickel, in: 1994.","chicago":"Meier, Torsten, M. Koch, F. Jahnke, J. Feldmann, W. Schäfer, P. Thomas, S.W. Koch, E.O. Göbel, and H. Nickel. “Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets,” 1994. <a href=\"https://doi.org/10.1364/UP.1994.TuE.3\">https://doi.org/10.1364/UP.1994.TuE.3</a>."},"abstract":[{"text":"A proper description of subpicosecond four-wave-mixing (FWM) experiments for excitonic transitions in semiconductor heterostructures must consider the fact that the spectrally broad laser pulses excite not only the 1s bound exciton state but also energetically higher bound exciton states and the lower-lying part of the unbound continuum states. In this paper, we report results of transient and time-resolved FWM-experiments in which such ’excitonic wave packets’ play a crucial role. In addition, a theoretical treatment of the problem based on the solution of the semiconductor Bloch is presented. We show that the time-dependent nonlinear response is determined by an interplay between inhomogeneous broadening and Coulomb interaction.","lang":"eng"}],"extern":"1","date_created":"2023-05-01T11:46:18Z","type":"conference","department":[{"_id":"293"}]},{"doi":"10.1103/PhysRevB.47.1532","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.47.1532"}],"intvolume":"        47","publication_status":"published","date_updated":"2023-04-11T05:36:57Z","author":[{"last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten","full_name":"Meier, Torsten","id":"344"},{"first_name":"M.","last_name":"Koch","full_name":"Koch, M."},{"full_name":"Weber, D.","last_name":"Weber","first_name":"D."},{"first_name":"J.","last_name":"Feldmann","full_name":"Feldmann, J."},{"first_name":"E.O.","last_name":"Göbel","full_name":"Göbel, E.O."},{"first_name":"A.","last_name":"Schulze","full_name":"Schulze, A."},{"full_name":"Thomas, P.","first_name":"P.","last_name":"Thomas"},{"full_name":"Schmitt-Rink, S.","first_name":"S.","last_name":"Schmitt-Rink"},{"full_name":"Ploog, K.","first_name":"K.","last_name":"Ploog"}],"title":"Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices","year":"1993","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-11T05:36:54Z","extern":"1","abstract":[{"text":"We present subpicosecond time-resolved four-wave-mixing studies on GaAs/AlAs short-period superlattices having different miniband widths. Photon echoes are observed as a consequence of the inhomogeneous broadening of the excitonic resonance. In addition, the photon-echo signal exhibits periodic modulations as a function of the time delay between the excitation laser pulses. Free excitons and excitons bound to neutral acceptors are identified as the underlying three-level system leading to the observed photon-echo quantum beats. From the beat period we can directly infer the dissociation energy of the bound exciton. In accordance with theory, we find that the dissociation energy decreases with increasing miniband width, i.e., when the excitons become less confined. In addition, we find that the dephasing rate of bound excitons is about one order of magnitude less than that of free excitons and is mainly determined by energy relaxation.","lang":"eng"}],"issue":"3","publication":"Physical Review B","volume":47,"user_id":"49063","_id":"43449","publisher":"American Physical Society","page":"1532-1539","status":"public","citation":{"short":"T. Meier, M. Koch, D. Weber, J. Feldmann, E.O. Göbel, A. Schulze, P. Thomas, S. Schmitt-Rink, K. Ploog, Physical Review B 47 (1993) 1532–1539.","chicago":"Meier, Torsten, M. Koch, D. Weber, J. Feldmann, E.O. Göbel, A. Schulze, P. Thomas, S. Schmitt-Rink, and K. Ploog. “Subpicosecond Photon-Echo Spectroscopy on GaAs/AlAs Short-Period Superlattices.” <i>Physical Review B</i> 47, no. 3 (1993): 1532–39. <a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">https://doi.org/10.1103/PhysRevB.47.1532</a>.","ieee":"T. Meier <i>et al.</i>, “Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices,” <i>Physical Review B</i>, vol. 47, no. 3, pp. 1532–1539, 1993, doi: <a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">10.1103/PhysRevB.47.1532</a>.","apa":"Meier, T., Koch, M., Weber, D., Feldmann, J., Göbel, E. O., Schulze, A., Thomas, P., Schmitt-Rink, S., &#38; Ploog, K. (1993). Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices. <i>Physical Review B</i>, <i>47</i>(3), 1532–1539. <a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">https://doi.org/10.1103/PhysRevB.47.1532</a>","bibtex":"@article{Meier_Koch_Weber_Feldmann_Göbel_Schulze_Thomas_Schmitt-Rink_Ploog_1993, title={Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices}, volume={47}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">10.1103/PhysRevB.47.1532</a>}, number={3}, journal={Physical Review B}, publisher={American Physical Society}, author={Meier, Torsten and Koch, M. and Weber, D. and Feldmann, J. and Göbel, E.O. and Schulze, A. and Thomas, P. and Schmitt-Rink, S. and Ploog, K.}, year={1993}, pages={1532–1539} }","ama":"Meier T, Koch M, Weber D, et al. Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices. <i>Physical Review B</i>. 1993;47(3):1532-1539. doi:<a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">10.1103/PhysRevB.47.1532</a>","mla":"Meier, Torsten, et al. “Subpicosecond Photon-Echo Spectroscopy on GaAs/AlAs Short-Period Superlattices.” <i>Physical Review B</i>, vol. 47, no. 3, American Physical Society, 1993, pp. 1532–39, doi:<a href=\"https://doi.org/10.1103/PhysRevB.47.1532\">10.1103/PhysRevB.47.1532</a>."}},{"place":"Dordrecht","citation":{"short":"T. Meier, E.O. Göbel, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, P. Thomas, S. Schmitt-Rink, K. Köhler, K. Ploog, in: D. Lookwood, A. Pinczuk (Eds.), Optical Phenomena in Semiconductor Structures of Reduced Dimension, Springer, Dordrecht, 1993, pp. 145–155.","chicago":"Meier, Torsten, E.O. Göbel, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, P. Thomas, S. Schmitt-Rink, K. Köhler, and K. Ploog. “Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures.” In <i>Optical Phenomena in Semiconductor Structures of Reduced Dimension</i>, edited by D. Lookwood and A. Pinczuk, 145–55. Dordrecht: Springer, 1993. <a href=\"https://doi.org/10.1007/978-94-011-1912-2_14\">https://doi.org/10.1007/978-94-011-1912-2_14</a>.","apa":"Meier, T., Göbel, E. O., Koch, M., Feldmann, J., von Plessen, G., Schulze, A., Thomas, P., Schmitt-Rink, S., Köhler, K., &#38; Ploog, K. (1993). Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures. In D. Lookwood &#38; A. Pinczuk (Eds.), <i>Optical Phenomena in Semiconductor Structures of Reduced Dimension</i> (pp. 145–155). Springer. <a href=\"https://doi.org/10.1007/978-94-011-1912-2_14\">https://doi.org/10.1007/978-94-011-1912-2_14</a>","ieee":"T. Meier <i>et al.</i>, “Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures,” in <i>Optical Phenomena in Semiconductor Structures of Reduced Dimension</i>, D. Lookwood and A. Pinczuk, Eds. Dordrecht: Springer, 1993, pp. 145–155.","ama":"Meier T, Göbel EO, Koch M, et al. Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures. In: Lookwood D, Pinczuk A, eds. <i>Optical Phenomena in Semiconductor Structures of Reduced Dimension</i>. Springer; 1993:145-155. doi:<a href=\"https://doi.org/10.1007/978-94-011-1912-2_14\">10.1007/978-94-011-1912-2_14</a>","bibtex":"@inbook{Meier_Göbel_Koch_Feldmann_von Plessen_Schulze_Thomas_Schmitt-Rink_Köhler_Ploog_1993, place={Dordrecht}, title={Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures}, DOI={<a href=\"https://doi.org/10.1007/978-94-011-1912-2_14\">10.1007/978-94-011-1912-2_14</a>}, booktitle={Optical Phenomena in Semiconductor Structures of Reduced Dimension}, publisher={Springer}, author={Meier, Torsten and Göbel, E.O. and Koch, M. and Feldmann, J. and von Plessen, G. and Schulze, A. and Thomas, P. and Schmitt-Rink, S. and Köhler, K. and Ploog, K.}, editor={Lookwood, D. and Pinczuk, A.}, year={1993}, pages={145–155} }","mla":"Meier, Torsten, et al. “Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures.” <i>Optical Phenomena in Semiconductor Structures of Reduced Dimension</i>, edited by D. Lookwood and A. Pinczuk, Springer, 1993, pp. 145–55, doi:<a href=\"https://doi.org/10.1007/978-94-011-1912-2_14\">10.1007/978-94-011-1912-2_14</a>."},"_id":"43442","publisher":"Springer","page":"145-155","editor":[{"full_name":"Lookwood, D.","last_name":"Lookwood","first_name":"D."},{"full_name":"Pinczuk, A.","first_name":"A.","last_name":"Pinczuk"}],"user_id":"49063","status":"public","date_created":"2023-04-11T05:17:00Z","department":[{"_id":"293"}],"type":"book_chapter","publication":"Optical Phenomena in Semiconductor Structures of Reduced Dimension","extern":"1","abstract":[{"text":"Femtosecond nonlinear laser spectroscopy is applied to study the dynamics of coherent optical excitations in semiconductors. In particular, beat phenomena of excitonic excitations in quantum wells and superlattice structures will be considered. We will demonstrate that four wave mixing experiments with time resolved detection of the nonlinear signal are able to distinguish between quantum beats and polarization interference. In addition, we report for a GaAs/AlAs superlattice the observation of quantum beats in the photon echo signal. The occurence of these beats is attributed to the simultaneous excitation of bound and localized excitons.","lang":"eng"}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://link.springer.com/chapter/10.1007/978-94-011-1912-2_14"}],"doi":"10.1007/978-94-011-1912-2_14","publication_identifier":{"isbn":["978-94-010-4845-3"]},"author":[{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"},{"full_name":"Göbel, E.O.","last_name":"Göbel","first_name":"E.O."},{"full_name":"Koch, M.","last_name":"Koch","first_name":"M."},{"first_name":"J.","last_name":"Feldmann","full_name":"Feldmann, J."},{"full_name":"von Plessen, G.","first_name":"G.","last_name":"von Plessen"},{"first_name":"A.","last_name":"Schulze","full_name":"Schulze, A."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"first_name":"S.","last_name":"Schmitt-Rink","full_name":"Schmitt-Rink, S."},{"last_name":"Köhler","first_name":"K.","full_name":"Köhler, K."},{"first_name":"K.","last_name":"Ploog","full_name":"Ploog, K."}],"year":"1993","title":"Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures","publication_status":"published","date_updated":"2023-04-11T05:17:02Z"},{"volume":70,"user_id":"49063","_id":"43448","publisher":"American Physical Society","page":"3027-3030","status":"public","citation":{"ama":"Meier T, Feldmann J, von Plessen G, et al. Coherent Dynamics of Excitonic Wave Packets. <i>Physical review letters</i>. 1993;70(20):3027-3030. doi:<a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">10.1103/PhysRevLett.70.3027</a>","bibtex":"@article{Meier_Feldmann_von Plessen_Koch_Göbel_Thomas_Bacher_Hartmann_Schweizer_Schäfer_et al._1993, title={Coherent Dynamics of Excitonic Wave Packets}, volume={70}, DOI={<a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">10.1103/PhysRevLett.70.3027</a>}, number={20}, journal={Physical review letters}, publisher={American Physical Society}, author={Meier, Torsten and Feldmann, J. and von Plessen, G. and Koch, M. and Göbel, E.O. and Thomas, P. and Bacher, G. and Hartmann, C. and Schweizer, H. and Schäfer, W. and et al.}, year={1993}, pages={3027–3030} }","mla":"Meier, Torsten, et al. “Coherent Dynamics of Excitonic Wave Packets.” <i>Physical Review Letters</i>, vol. 70, no. 20, American Physical Society, 1993, pp. 3027–30, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">10.1103/PhysRevLett.70.3027</a>.","chicago":"Meier, Torsten, J. Feldmann, G. von Plessen, M. Koch, E.O. Göbel, P. Thomas, G. Bacher, et al. “Coherent Dynamics of Excitonic Wave Packets.” <i>Physical Review Letters</i> 70, no. 20 (1993): 3027–30. <a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">https://doi.org/10.1103/PhysRevLett.70.3027</a>.","short":"T. Meier, J. Feldmann, G. von Plessen, M. Koch, E.O. Göbel, P. Thomas, G. Bacher, C. Hartmann, H. Schweizer, W. Schäfer, H. Nickel, Physical Review Letters 70 (1993) 3027–3030.","apa":"Meier, T., Feldmann, J., von Plessen, G., Koch, M., Göbel, E. O., Thomas, P., Bacher, G., Hartmann, C., Schweizer, H., Schäfer, W., &#38; Nickel, H. (1993). Coherent Dynamics of Excitonic Wave Packets. <i>Physical Review Letters</i>, <i>70</i>(20), 3027–3030. <a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">https://doi.org/10.1103/PhysRevLett.70.3027</a>","ieee":"T. Meier <i>et al.</i>, “Coherent Dynamics of Excitonic Wave Packets,” <i>Physical review letters</i>, vol. 70, no. 20, pp. 3027–3030, 1993, doi: <a href=\"https://doi.org/10.1103/PhysRevLett.70.3027\">10.1103/PhysRevLett.70.3027</a>."},"doi":"10.1103/PhysRevLett.70.3027","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.70.3027"}],"intvolume":"        70","publication_status":"published","date_updated":"2023-04-11T05:33:58Z","author":[{"id":"344","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"full_name":"Feldmann, J.","last_name":"Feldmann","first_name":"J."},{"full_name":"von Plessen, G.","first_name":"G.","last_name":"von Plessen"},{"last_name":"Koch","first_name":"M.","full_name":"Koch, M."},{"full_name":"Göbel, E.O.","last_name":"Göbel","first_name":"E.O."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"full_name":"Bacher, G.","first_name":"G.","last_name":"Bacher"},{"last_name":"Hartmann","first_name":"C.","full_name":"Hartmann, C."},{"full_name":"Schweizer, H.","last_name":"Schweizer","first_name":"H."},{"full_name":"Schäfer, W.","last_name":"Schäfer","first_name":"W."},{"full_name":"Nickel, H.","last_name":"Nickel","first_name":"H."}],"year":"1993","title":"Coherent Dynamics of Excitonic Wave Packets","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-11T05:33:56Z","extern":"1","abstract":[{"text":"We report on the coherent dynamics of excitonic wave packets observed in transient four-wave mixing experiments on strained InGaAs/GaAs quantum-well structures. The excitonic noneigenstates are created by using laser pulses shorter than the electron round trip time within the exciton orbital. A characteristic temporal modulation of the diffracted signal is observed, which resembles the coherent dynamics of an electron wave packet in a hydrogen atom expected for the case of a simultaneous excitation of all bound and the lowest continuum states.","lang":"eng"}],"issue":"20","publication":"Physical review letters"},{"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.48.11817"}],"doi":"10.1103/PhysRevB.48.11817","author":[{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"first_name":"M.","last_name":"Batsch","full_name":"Batsch, M."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"last_name":"Lindberg","first_name":"M.","full_name":"Lindberg, M."},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."},{"full_name":"Shah, J.","last_name":"Shah","first_name":"J."}],"year":"1993","title":"Dipole-dipole coupling of excitons in double quantum wells","intvolume":"        48","date_updated":"2023-04-11T05:31:28Z","publication_status":"published","date_created":"2023-04-11T05:31:25Z","department":[{"_id":"293"}],"type":"journal_article","publication":"Physical Review B","issue":"16","abstract":[{"text":"Exciton coupling is studied for double quantum wells, which are separated by thick barriers. Results are presented for the linear optical spectrum, stationary and transient luminescence as well as four-wave-mixing signals. Additionally, coherent and incoherent transport through the barrier is considered","lang":"eng"}],"extern":"1","publisher":"American Physical Society","_id":"43447","page":"11817-11826","volume":48,"user_id":"49063","status":"public","citation":{"mla":"Meier, Torsten, et al. “Dipole-Dipole Coupling of Excitons in Double Quantum Wells.” <i>Physical Review B</i>, vol. 48, no. 16, American Physical Society, 1993, pp. 11817–26, doi:<a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">10.1103/PhysRevB.48.11817</a>.","ama":"Meier T, Batsch M, Thomas P, Lindberg M, Koch SW, Shah J. Dipole-dipole coupling of excitons in double quantum wells. <i>Physical Review B</i>. 1993;48(16):11817-11826. doi:<a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">10.1103/PhysRevB.48.11817</a>","bibtex":"@article{Meier_Batsch_Thomas_Lindberg_Koch_Shah_1993, title={Dipole-dipole coupling of excitons in double quantum wells}, volume={48}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">10.1103/PhysRevB.48.11817</a>}, number={16}, journal={Physical Review B}, publisher={American Physical Society}, author={Meier, Torsten and Batsch, M. and Thomas, P. and Lindberg, M. and Koch, S.W. and Shah, J.}, year={1993}, pages={11817–11826} }","apa":"Meier, T., Batsch, M., Thomas, P., Lindberg, M., Koch, S. W., &#38; Shah, J. (1993). Dipole-dipole coupling of excitons in double quantum wells. <i>Physical Review B</i>, <i>48</i>(16), 11817–11826. <a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">https://doi.org/10.1103/PhysRevB.48.11817</a>","ieee":"T. Meier, M. Batsch, P. Thomas, M. Lindberg, S. W. Koch, and J. Shah, “Dipole-dipole coupling of excitons in double quantum wells,” <i>Physical Review B</i>, vol. 48, no. 16, pp. 11817–11826, 1993, doi: <a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">10.1103/PhysRevB.48.11817</a>.","short":"T. Meier, M. Batsch, P. Thomas, M. Lindberg, S.W. Koch, J. Shah, Physical Review B 48 (1993) 11817–11826.","chicago":"Meier, Torsten, M. Batsch, P. Thomas, M. Lindberg, S.W. Koch, and J. Shah. “Dipole-Dipole Coupling of Excitons in Double Quantum Wells.” <i>Physical Review B</i> 48, no. 16 (1993): 11817–26. <a href=\"https://doi.org/10.1103/PhysRevB.48.11817\">https://doi.org/10.1103/PhysRevB.48.11817</a>."}},{"article_number":"QMG1","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=qels-1993-QMG1"}],"_id":"44286","language":[{"iso":"eng"}],"user_id":"49063","title":"Theory for polarization-dependent four-wave-mixing signals in quantum wells","status":"public","year":"1993","publication_identifier":{"isbn":["1-55752-302-9"]},"author":[{"id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","full_name":"Meier, Torsten"},{"last_name":"Bennhardt","first_name":"D.","full_name":"Bennhardt, D."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"full_name":"Eccleston, R.","last_name":"Eccleston","first_name":"R."},{"first_name":"E.","last_name":"Mayer","full_name":"Mayer, E."},{"first_name":"J.","last_name":"Kuhl","full_name":"Kuhl, J."}],"conference":{"end_date":"1993-05-07","location":"Baltimore, Maryland United States","start_date":"1993-05-02","name":"Quantum Electronics and Laser Science Conference 1993"},"publication_status":"published","date_updated":"2023-05-01T11:49:59Z","date_created":"2023-05-01T11:49:56Z","type":"conference","department":[{"_id":"293"}],"publication":"Quantum Electronics and Laser Science Conference","citation":{"mla":"Meier, Torsten, et al. “Theory for Polarization-Dependent Four-Wave-Mixing Signals in Quantum Wells.” <i>Quantum Electronics and Laser Science Conference</i>, QMG1, 1993.","bibtex":"@inproceedings{Meier_Bennhardt_Thomas_Eccleston_Mayer_Kuhl_1993, title={Theory for polarization-dependent four-wave-mixing signals in quantum wells}, number={QMG1}, booktitle={Quantum Electronics and Laser Science Conference}, author={Meier, Torsten and Bennhardt, D. and Thomas, P. and Eccleston, R. and Mayer, E. and Kuhl, J.}, year={1993} }","ama":"Meier T, Bennhardt D, Thomas P, Eccleston R, Mayer E, Kuhl J. Theory for polarization-dependent four-wave-mixing signals in quantum wells. In: <i>Quantum Electronics and Laser Science Conference</i>. ; 1993.","ieee":"T. Meier, D. Bennhardt, P. Thomas, R. Eccleston, E. Mayer, and J. Kuhl, “Theory for polarization-dependent four-wave-mixing signals in quantum wells,” presented at the Quantum Electronics and Laser Science Conference 1993, Baltimore, Maryland United States, 1993.","apa":"Meier, T., Bennhardt, D., Thomas, P., Eccleston, R., Mayer, E., &#38; Kuhl, J. (1993). Theory for polarization-dependent four-wave-mixing signals in quantum wells. <i>Quantum Electronics and Laser Science Conference</i>, Article QMG1. Quantum Electronics and Laser Science Conference 1993, Baltimore, Maryland United States.","short":"T. Meier, D. Bennhardt, P. Thomas, R. Eccleston, E. Mayer, J. Kuhl, in: Quantum Electronics and Laser Science Conference, 1993.","chicago":"Meier, Torsten, D. Bennhardt, P. Thomas, R. Eccleston, E. Mayer, and J. Kuhl. “Theory for Polarization-Dependent Four-Wave-Mixing Signals in Quantum Wells.” In <i>Quantum Electronics and Laser Science Conference</i>, 1993."},"extern":"1","abstract":[{"text":"In degenerate four-wave-mixing (DFWM) experiments the polarization of the incident laser pulses can have a strong influence on the measured signal. For GaAs quantum wells a number of DFWM experiments were performed by using either parallel or perpendicular polarization of the incident laser pulses. Experimentally, it turned out that some characteristic features of the signal differ appreciably for the two configurations. In particular, different dephasing times, phase shifts of the quantum beats, different time-resolved behavior (echoes versus free-induction decay), and intensity dependence of the measured signal have been reported","lang":"eng"}]},{"_id":"44287","language":[{"iso":"eng"}],"article_number":"QMC6","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=QELS-1993-QMC6"}],"user_id":"49063","publication_identifier":{"isbn":["1-55752-302-9"]},"author":[{"id":"344","orcid":"0000-0001-8864-2072","first_name":"Torsten","last_name":"Meier","full_name":"Meier, Torsten"},{"first_name":"M.","last_name":"Koch","full_name":"Koch, M."},{"full_name":"Feldmann, J.","last_name":"Feldmann","first_name":"J."},{"first_name":"G.","last_name":"von Plessen","full_name":"von Plessen, G."},{"last_name":"Schulze","first_name":"A.","full_name":"Schulze, A."},{"full_name":"Göbel, E.O.","last_name":"Göbel","first_name":"E.O."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"last_name":"Schmitt-Rink","first_name":"S.","full_name":"Schmitt-Rink, S."},{"full_name":"Shah, J.","last_name":"Shah","first_name":"J."},{"first_name":"K.","last_name":"Ploog","full_name":"Ploog, K."},{"full_name":"Köhler, K.","first_name":"K.","last_name":"Köhler"}],"conference":{"location":"Baltimore, Maryland United States","start_date":"1993-05-02","name":"Quantum Electronics and Laser Science Conference 1993","end_date":"1993-05-07"},"title":"Coherent coupling of exciton transitions in semiconductor quantum structures","status":"public","year":"1993","publication_status":"published","date_updated":"2023-05-01T11:53:27Z","date_created":"2023-05-01T11:53:23Z","department":[{"_id":"293"}],"type":"conference","citation":{"bibtex":"@inproceedings{Meier_Koch_Feldmann_von Plessen_Schulze_Göbel_Thomas_Schmitt-Rink_Shah_Ploog_et al._1993, title={Coherent coupling of exciton transitions in semiconductor quantum structures}, number={QMC6}, booktitle={Quantum Electronics and Laser Science Conference}, author={Meier, Torsten and Koch, M. and Feldmann, J. and von Plessen, G. and Schulze, A. and Göbel, E.O. and Thomas, P. and Schmitt-Rink, S. and Shah, J. and Ploog, K. and et al.}, year={1993} }","ama":"Meier T, Koch M, Feldmann J, et al. Coherent coupling of exciton transitions in semiconductor quantum structures. In: <i>Quantum Electronics and Laser Science Conference</i>. ; 1993.","mla":"Meier, Torsten, et al. “Coherent Coupling of Exciton Transitions in Semiconductor Quantum Structures.” <i>Quantum Electronics and Laser Science Conference</i>, QMC6, 1993.","chicago":"Meier, Torsten, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, E.O. Göbel, P. Thomas, et al. “Coherent Coupling of Exciton Transitions in Semiconductor Quantum Structures.” In <i>Quantum Electronics and Laser Science Conference</i>, 1993.","short":"T. Meier, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, E.O. Göbel, P. Thomas, S. Schmitt-Rink, J. Shah, K. Ploog, K. Köhler, in: Quantum Electronics and Laser Science Conference, 1993.","ieee":"T. Meier <i>et al.</i>, “Coherent coupling of exciton transitions in semiconductor quantum structures,” presented at the Quantum Electronics and Laser Science Conference 1993, Baltimore, Maryland United States, 1993.","apa":"Meier, T., Koch, M., Feldmann, J., von Plessen, G., Schulze, A., Göbel, E. O., Thomas, P., Schmitt-Rink, S., Shah, J., Ploog, K., &#38; Köhler, K. (1993). Coherent coupling of exciton transitions in semiconductor quantum structures. <i>Quantum Electronics and Laser Science Conference</i>, Article QMC6. Quantum Electronics and Laser Science Conference 1993, Baltimore, Maryland United States."},"publication":"Quantum Electronics and Laser Science Conference","extern":"1","abstract":[{"text":"We investigate the coherent coupling of free and bound excitonic transitions, as wets as of distinct excitonic transitions arising from spatially separated quantum-well islands by means of time-resolved four-wave-mixing experiments.","lang":"eng"}]},{"citation":{"ieee":"T. Meier <i>et al.</i>, “Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential,” <i>IEEE journal of quantum electronics</i>, vol. 28, no. 10, pp. 2498–2507, 1992, doi: <a href=\"https://doi.org/10.1109/3.159556\">10.1109/3.159556</a>.","apa":"Meier, T., Leo, K., Shah, J., Damen, T. C., Schulze, A., Schmitt-Rink, S., Thomas, P., Göbel, E. O., Chuang, S. L., Luo, M. S. C., Schäfer, W., Köhler, K., &#38; Ganser, P. (1992). Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential. <i>IEEE Journal of Quantum Electronics</i>, <i>28</i>(10), 2498–2507. <a href=\"https://doi.org/10.1109/3.159556\">https://doi.org/10.1109/3.159556</a>","short":"T. Meier, K. Leo, J. Shah, T.C. Damen, A. Schulze, S. Schmitt-Rink, P. Thomas, E.O. Göbel, S.L. Chuang, M.S.C. Luo, W. Schäfer, K. Köhler, P. Ganser, IEEE Journal of Quantum Electronics 28 (1992) 2498–2507.","chicago":"Meier, Torsten, K. Leo, J. Shah, T.C. Damen, A. Schulze, S. Schmitt-Rink, P. Thomas, et al. “Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential.” <i>IEEE Journal of Quantum Electronics</i> 28, no. 10 (1992): 2498–2507. <a href=\"https://doi.org/10.1109/3.159556\">https://doi.org/10.1109/3.159556</a>.","mla":"Meier, Torsten, et al. “Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential.” <i>IEEE Journal of Quantum Electronics</i>, vol. 28, no. 10, IEEE, 1992, pp. 2498–507, doi:<a href=\"https://doi.org/10.1109/3.159556\">10.1109/3.159556</a>.","bibtex":"@article{Meier_Leo_Shah_Damen_Schulze_Schmitt-Rink_Thomas_Göbel_Chuang_Luo_et al._1992, title={Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential}, volume={28}, DOI={<a href=\"https://doi.org/10.1109/3.159556\">10.1109/3.159556</a>}, number={10}, journal={IEEE journal of quantum electronics}, publisher={IEEE}, author={Meier, Torsten and Leo, K. and Shah, J. and Damen, T.C. and Schulze, A. and Schmitt-Rink, S. and Thomas, P. and Göbel, E.O. and Chuang, S.L. and Luo, M.S.C. and et al.}, year={1992}, pages={2498–2507} }","ama":"Meier T, Leo K, Shah J, et al. Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential. <i>IEEE journal of quantum electronics</i>. 1992;28(10):2498-2507. doi:<a href=\"https://doi.org/10.1109/3.159556\">10.1109/3.159556</a>"},"status":"public","volume":28,"user_id":"49063","publisher":"IEEE","_id":"43444","page":"2498-2507","extern":"1","abstract":[{"text":"The authors present a detailed study of coherent tunneling oscillations of an optically excited electronic wavepacket in a semiconductor double quantum-well structure. The oscillation of the wavepacket between the two wells is traced by time-resolved pump-probe spectroscopy as well as time-resolved degenerate four-wave mixing. The experimental observations are compared with a simple theoretical model. The motion of the wave packet is studied as a function of both an external electric field and the lattice temperature. While the oscillation frequency shows the expected dependence on electric field, it increases with temperature at fixed electric field when perfectly delocalized electronic states exist at low temperature.","lang":"eng"}],"issue":"10","publication":"IEEE journal of quantum electronics","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-11T05:25:02Z","intvolume":"        28","publication_status":"published","date_updated":"2023-04-11T05:25:04Z","publication_identifier":{"issn":["0018-9197"],"eissn":["1558-1713"]},"author":[{"last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten","full_name":"Meier, Torsten","id":"344"},{"first_name":"K.","last_name":"Leo","full_name":"Leo, K."},{"first_name":"J.","last_name":"Shah","full_name":"Shah, J."},{"last_name":"Damen","first_name":"T.C.","full_name":"Damen, T.C."},{"full_name":"Schulze, A.","first_name":"A.","last_name":"Schulze"},{"full_name":"Schmitt-Rink, S.","last_name":"Schmitt-Rink","first_name":"S."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"full_name":"Göbel, E.O.","first_name":"E.O.","last_name":"Göbel"},{"last_name":"Chuang","first_name":"S.L.","full_name":"Chuang, S.L."},{"full_name":"Luo, M.S.C.","first_name":"M.S.C.","last_name":"Luo"},{"full_name":"Schäfer, W.","first_name":"W.","last_name":"Schäfer"},{"first_name":"K.","last_name":"Köhler","full_name":"Köhler, K."},{"last_name":"Ganser","first_name":"P.","full_name":"Ganser, P."}],"title":"Dissipative Dynamics of an Electronic Wavepacket in a Semiconductor Double Well Potential","year":"1992","doi":"10.1109/3.159556","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ieeexplore.ieee.org/abstract/document/159556"}]},{"author":[{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"last_name":"Feldmann","first_name":"J.","full_name":"Feldmann, J."},{"full_name":"Leo, K.","last_name":"Leo","first_name":"K."},{"full_name":"Shah, J.","first_name":"J.","last_name":"Shah"},{"first_name":"D.A.B.","last_name":"Miller","full_name":"Miller, D.A.B."},{"full_name":"Cunningham, J.E.","last_name":"Cunningham","first_name":"J.E."},{"full_name":"von Plessen, G.","last_name":"von Plessen","first_name":"G."},{"last_name":"Schulze","first_name":"A.","full_name":"Schulze, A."},{"last_name":"Thomas","first_name":"P.","full_name":"Thomas, P."},{"last_name":"Schmitt-Rink","first_name":"S.","full_name":"Schmitt-Rink, S."}],"year":"1992","title":"Optical investigation of Bloch oscillations in a semiconductor superlattice","intvolume":"        46","date_updated":"2023-04-11T05:20:42Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.46.7252"}],"doi":"10.1103/PhysRevB.46.7252","issue":"11","publication":"Physical Review B","abstract":[{"text":"We report the study of optical dephazing of Wannier-Stark ladder excitations in a semiconductor superlattice by means of transient degenerate four-wave mixing. We observe pronounced modulations of the signal with a time period varying linearly with the electric field. The time period is found to equal the temporal periodicity of Bloch oscillations, in agreement with theory. In addition, we find that the dephazing time decreases with increasing localization of the Wannier-Stark states, which is attributed to carrier escape out of the lowest miniband.","lang":"eng"}],"extern":"1","date_created":"2023-04-11T05:20:39Z","department":[{"_id":"293"}],"type":"journal_article","status":"public","_id":"43443","publisher":"American Physical Society","page":"7252-7255","volume":46,"user_id":"49063","citation":{"short":"T. Meier, J. Feldmann, K. Leo, J. Shah, D.A.B. Miller, J.E. Cunningham, G. von Plessen, A. Schulze, P. Thomas, S. Schmitt-Rink, Physical Review B 46 (1992) 7252–7255.","chicago":"Meier, Torsten, J. Feldmann, K. Leo, J. Shah, D.A.B. Miller, J.E. Cunningham, G. von Plessen, A. Schulze, P. Thomas, and S. Schmitt-Rink. “Optical Investigation of Bloch Oscillations in a Semiconductor Superlattice.” <i>Physical Review B</i> 46, no. 11 (1992): 7252–55. <a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">https://doi.org/10.1103/PhysRevB.46.7252</a>.","ieee":"T. Meier <i>et al.</i>, “Optical investigation of Bloch oscillations in a semiconductor superlattice,” <i>Physical Review B</i>, vol. 46, no. 11, pp. 7252–7255, 1992, doi: <a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">10.1103/PhysRevB.46.7252</a>.","apa":"Meier, T., Feldmann, J., Leo, K., Shah, J., Miller, D. A. B., Cunningham, J. E., von Plessen, G., Schulze, A., Thomas, P., &#38; Schmitt-Rink, S. (1992). Optical investigation of Bloch oscillations in a semiconductor superlattice. <i>Physical Review B</i>, <i>46</i>(11), 7252–7255. <a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">https://doi.org/10.1103/PhysRevB.46.7252</a>","bibtex":"@article{Meier_Feldmann_Leo_Shah_Miller_Cunningham_von Plessen_Schulze_Thomas_Schmitt-Rink_1992, title={Optical investigation of Bloch oscillations in a semiconductor superlattice}, volume={46}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">10.1103/PhysRevB.46.7252</a>}, number={11}, journal={Physical Review B}, publisher={American Physical Society}, author={Meier, Torsten and Feldmann, J. and Leo, K. and Shah, J. and Miller, D.A.B. and Cunningham, J.E. and von Plessen, G. and Schulze, A. and Thomas, P. and Schmitt-Rink, S.}, year={1992}, pages={7252–7255} }","ama":"Meier T, Feldmann J, Leo K, et al. Optical investigation of Bloch oscillations in a semiconductor superlattice. <i>Physical Review B</i>. 1992;46(11):7252-7255. doi:<a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">10.1103/PhysRevB.46.7252</a>","mla":"Meier, Torsten, et al. “Optical Investigation of Bloch Oscillations in a Semiconductor Superlattice.” <i>Physical Review B</i>, vol. 46, no. 11, American Physical Society, 1992, pp. 7252–55, doi:<a href=\"https://doi.org/10.1103/PhysRevB.46.7252\">10.1103/PhysRevB.46.7252</a>."}},{"status":"public","page":"21-30","_id":"43445","user_id":"49063","volume":173,"citation":{"mla":"Meier, Torsten, et al. “Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures.” <i>Physica Status Solidi (b)</i>, vol. 173, no. 1, 1992, pp. 21–30, doi:<a href=\"https://doi.org/10.1002/pssb.2221730103\">10.1002/pssb.2221730103</a>.","ama":"Meier T, Göbel EO, Koch M, et al. Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures. <i>physica status solidi (b)</i>. 1992;173(1):21-30. doi:<a href=\"https://doi.org/10.1002/pssb.2221730103\">10.1002/pssb.2221730103</a>","bibtex":"@article{Meier_Göbel_Koch_Feldmann_von Plessen_Schulze_Thomas_Schmitt-Rink_Köhler_Ploog_1992, title={Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures}, volume={173}, DOI={<a href=\"https://doi.org/10.1002/pssb.2221730103\">10.1002/pssb.2221730103</a>}, number={1}, journal={physica status solidi (b)}, author={Meier, Torsten and Göbel, E.O. and Koch, M. and Feldmann, J. and von Plessen, G. and Schulze, A. and Thomas, P. and Schmitt-Rink, S. and Köhler, K. and Ploog, K.}, year={1992}, pages={21–30} }","apa":"Meier, T., Göbel, E. O., Koch, M., Feldmann, J., von Plessen, G., Schulze, A., Thomas, P., Schmitt-Rink, S., Köhler, K., &#38; Ploog, K. (1992). Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures. <i>Physica Status Solidi (b)</i>, <i>173</i>(1), 21–30. <a href=\"https://doi.org/10.1002/pssb.2221730103\">https://doi.org/10.1002/pssb.2221730103</a>","ieee":"T. Meier <i>et al.</i>, “Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures,” <i>physica status solidi (b)</i>, vol. 173, no. 1, pp. 21–30, 1992, doi: <a href=\"https://doi.org/10.1002/pssb.2221730103\">10.1002/pssb.2221730103</a>.","chicago":"Meier, Torsten, E.O. Göbel, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, P. Thomas, S. Schmitt-Rink, K. Köhler, and K. Ploog. “Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures.” <i>Physica Status Solidi (b)</i> 173, no. 1 (1992): 21–30. <a href=\"https://doi.org/10.1002/pssb.2221730103\">https://doi.org/10.1002/pssb.2221730103</a>.","short":"T. Meier, E.O. Göbel, M. Koch, J. Feldmann, G. von Plessen, A. Schulze, P. Thomas, S. Schmitt-Rink, K. Köhler, K. Ploog, Physica Status Solidi (b) 173 (1992) 21–30."},"title":"Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures","year":"1992","author":[{"id":"344","full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072"},{"last_name":"Göbel","first_name":"E.O.","full_name":"Göbel, E.O."},{"full_name":"Koch, M.","first_name":"M.","last_name":"Koch"},{"first_name":"J.","last_name":"Feldmann","full_name":"Feldmann, J."},{"first_name":"G.","last_name":"von Plessen","full_name":"von Plessen, G."},{"full_name":"Schulze, A.","first_name":"A.","last_name":"Schulze"},{"last_name":"Thomas","first_name":"P.","full_name":"Thomas, P."},{"last_name":"Schmitt-Rink","first_name":"S.","full_name":"Schmitt-Rink, S."},{"first_name":"K.","last_name":"Köhler","full_name":"Köhler, K."},{"last_name":"Ploog","first_name":"K.","full_name":"Ploog, K."}],"publication_status":"published","date_updated":"2023-04-11T05:29:05Z","intvolume":"       173","main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/10.1002/pssb.2221730103"}],"language":[{"iso":"eng"}],"doi":"10.1002/pssb.2221730103","issue":"1","publication":"physica status solidi (b)","extern":"1","abstract":[{"lang":"eng","text":"Femtosecond nonlinear laser spectroscopy is applied to study the dynamics of coherent optical excitations in semiconductors. In particular, excitonic excitations in quantum wells and superlattice structures are considered. Two examples demonstrate that four-wave mixing experiments with time-resolved detection of the nonlinear signal are able to distinguish between quantum beats and polarization interference.v"}],"date_created":"2023-04-11T05:28:59Z","type":"journal_article","department":[{"_id":"293"}]},{"citation":{"ieee":"T. Meier, P. Thomas, and S. W. Koch, “THz-emission from photoexcited semiconductor superlattices with applied ac and dc electric fields,” in <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, Baltimore, MD, USA, 1992, pp. 218–219, doi: <a href=\"https://doi.org/10.1109/QELS.1999.807564\">10.1109/QELS.1999.807564</a>.","apa":"Meier, T., Thomas, P., &#38; Koch, S. W. (1992). THz-emission from photoexcited semiconductor superlattices with applied ac and dc electric fields. <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 218–219. <a href=\"https://doi.org/10.1109/QELS.1999.807564\">https://doi.org/10.1109/QELS.1999.807564</a>","chicago":"Meier, Torsten, P. Thomas, and S.W. Koch. “THz-Emission from Photoexcited Semiconductor Superlattices with Applied Ac and Dc Electric Fields.” In <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 218–19. IEEE, 1992. <a href=\"https://doi.org/10.1109/QELS.1999.807564\">https://doi.org/10.1109/QELS.1999.807564</a>.","short":"T. Meier, P. Thomas, S.W. Koch, in: Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, IEEE, 1992, pp. 218–219.","mla":"Meier, Torsten, et al. “THz-Emission from Photoexcited Semiconductor Superlattices with Applied Ac and Dc Electric Fields.” <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, IEEE, 1992, pp. 218–19, doi:<a href=\"https://doi.org/10.1109/QELS.1999.807564\">10.1109/QELS.1999.807564</a>.","bibtex":"@inproceedings{Meier_Thomas_Koch_1992, title={THz-emission from photoexcited semiconductor superlattices with applied ac and dc electric fields}, DOI={<a href=\"https://doi.org/10.1109/QELS.1999.807564\">10.1109/QELS.1999.807564</a>}, booktitle={Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference}, publisher={IEEE}, author={Meier, Torsten and Thomas, P. and Koch, S.W.}, year={1992}, pages={218–219} }","ama":"Meier T, Thomas P, Koch SW. THz-emission from photoexcited semiconductor superlattices with applied ac and dc electric fields. In: <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>. IEEE; 1992:218-219. doi:<a href=\"https://doi.org/10.1109/QELS.1999.807564\">10.1109/QELS.1999.807564</a>"},"conference":{"start_date":"1992-05-23","name":"Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference","location":"Baltimore, MD, USA","end_date":"1992-05-28"},"status":"public","user_id":"49063","_id":"44291","publisher":"IEEE","page":"218-219","extern":"1","abstract":[{"lang":"eng","text":"Summary form only given. The numerical investigations are based on a microscopic many-body theory which allows one to compute the linear and nonlinear optical properties of semiconductor superlattices in the presence of homogeneous electric fields applied in the growth direction. The THz-emission due to the field-driven dynamics of photoexcited carriers is investigated for the combined action of static and alternating fields. For a driving field it was shown within a simple model that the equations governing the intraband dynamics in the field-driven superlattice should be analogous to the ones describing the superconducting Josephson junction. The transport properties in this regime can be described by the picture of multi-photon-assisted tunneling between Wannier-Stark states."}],"publication":"Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference","department":[{"_id":"293"}],"type":"conference","date_created":"2023-05-01T12:08:32Z","publication_status":"published","date_updated":"2023-05-01T12:11:33Z","publication_identifier":{"isbn":["1-55752-576-X"]},"author":[{"id":"344","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"full_name":"Thomas, P.","first_name":"P.","last_name":"Thomas"},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."}],"year":"1992","title":"THz-emission from photoexcited semiconductor superlattices with applied ac and dc electric fields","doi":"10.1109/QELS.1999.807564","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ieeexplore.ieee.org/abstract/document/807564"}]},{"year":"1992","title":"Distribution of exciton binding-energies in disordered semiconductor quantum-wells","author":[{"id":"344","first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten"},{"last_name":"Euteneuer","first_name":"A.","full_name":"Euteneuer, A."},{"last_name":"Finger","first_name":"E.","full_name":"Finger, E."},{"full_name":"Hofmann, M.","first_name":"M.","last_name":"Hofmann"},{"full_name":"Stolz, W.","last_name":"Stolz","first_name":"W."},{"full_name":"Thomas, P.","last_name":"Thomas","first_name":"P."},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."},{"full_name":"Ruhle, W.W.","first_name":"W.W.","last_name":"Ruhle"}],"publication_status":"published","date_updated":"2023-05-01T12:11:30Z","main_file_link":[{"url":"https://ieeexplore.ieee.org/abstract/document/807538"}],"language":[{"iso":"eng"}],"doi":"10.1109/QELS.1999.807538","publication":"Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference","extern":"1","abstract":[{"lang":"eng","text":"Summary form only given. Partly non-degenerate four-wave mixing is able to detect coherent coupling between excitonic resonances like e.g. light-hole and heavy-hole excitons or between an exciton and its continuum states. We apply an extension of this method, which we call selective coherent spectroscopy (SCS), to symmetrically strained (GaIn)As/Ga(PAs) multiple quantum-wells. The samples are excited simultaneously by a picosecond pulse with wavevector k/sub 1/ and a 100 fs pulse with wavevector k/sub 2/. The central wavelength of the picosecond pulse is scanned over the entire spectrum of the 100 fs pulse and the four-wave mixing signal in the direction 2k/sub 2/-k/sub 1/ is detected at a fixed energy. This scan provides an SCS spectrum."}],"date_created":"2023-05-01T12:11:26Z","type":"conference","department":[{"_id":"293"}],"status":"public","conference":{"location":"Baltimore, MD, USA","start_date":"1992-05-23","name":"Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference","end_date":"1992-05-28"},"page":"204","publisher":"IEEE","_id":"44292","user_id":"49063","citation":{"chicago":"Meier, Torsten, A. Euteneuer, E. Finger, M. Hofmann, W. Stolz, P. Thomas, S.W. Koch, and W.W. Ruhle. “Distribution of Exciton Binding-Energies in Disordered Semiconductor Quantum-Wells.” In <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 204. IEEE, 1992. <a href=\"https://doi.org/10.1109/QELS.1999.807538\">https://doi.org/10.1109/QELS.1999.807538</a>.","short":"T. Meier, A. Euteneuer, E. Finger, M. Hofmann, W. Stolz, P. Thomas, S.W. Koch, W.W. Ruhle, in: Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, IEEE, 1992, p. 204.","ieee":"T. Meier <i>et al.</i>, “Distribution of exciton binding-energies in disordered semiconductor quantum-wells,” in <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, Baltimore, MD, USA, 1992, p. 204, doi: <a href=\"https://doi.org/10.1109/QELS.1999.807538\">10.1109/QELS.1999.807538</a>.","apa":"Meier, T., Euteneuer, A., Finger, E., Hofmann, M., Stolz, W., Thomas, P., Koch, S. W., &#38; Ruhle, W. W. (1992). Distribution of exciton binding-energies in disordered semiconductor quantum-wells. <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 204. <a href=\"https://doi.org/10.1109/QELS.1999.807538\">https://doi.org/10.1109/QELS.1999.807538</a>","bibtex":"@inproceedings{Meier_Euteneuer_Finger_Hofmann_Stolz_Thomas_Koch_Ruhle_1992, title={Distribution of exciton binding-energies in disordered semiconductor quantum-wells}, DOI={<a href=\"https://doi.org/10.1109/QELS.1999.807538\">10.1109/QELS.1999.807538</a>}, booktitle={Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference}, publisher={IEEE}, author={Meier, Torsten and Euteneuer, A. and Finger, E. and Hofmann, M. and Stolz, W. and Thomas, P. and Koch, S.W. and Ruhle, W.W.}, year={1992}, pages={204} }","ama":"Meier T, Euteneuer A, Finger E, et al. Distribution of exciton binding-energies in disordered semiconductor quantum-wells. In: <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>. IEEE; 1992:204. doi:<a href=\"https://doi.org/10.1109/QELS.1999.807538\">10.1109/QELS.1999.807538</a>","mla":"Meier, Torsten, et al. “Distribution of Exciton Binding-Energies in Disordered Semiconductor Quantum-Wells.” <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, IEEE, 1992, p. 204, doi:<a href=\"https://doi.org/10.1109/QELS.1999.807538\">10.1109/QELS.1999.807538</a>."}},{"citation":{"ama":"Meier T, Sieh C, Koch SW, et al. Influence of carrier-correlations on the optical Stark effect of semiconductors. In: <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>. IEEE; 1992:14-15. doi:<a href=\"https://doi.org/10.1109/QELS.1999.807099\">10.1109/QELS.1999.807099</a>","bibtex":"@inproceedings{Meier_Sieh_Koch_Brick_Hubner_Ell_Prineas_Khitrova_Gibbs_1992, title={Influence of carrier-correlations on the optical Stark effect of semiconductors}, DOI={<a href=\"https://doi.org/10.1109/QELS.1999.807099\">10.1109/QELS.1999.807099</a>}, booktitle={Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference}, publisher={IEEE}, author={Meier, Torsten and Sieh, C. and Koch, S.W. and Brick, P. and Hubner, M. and Ell, C. and Prineas, J. and Khitrova, G. and Gibbs, H.M.}, year={1992}, pages={14–15} }","mla":"Meier, Torsten, et al. “Influence of Carrier-Correlations on the Optical Stark Effect of Semiconductors.” <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, IEEE, 1992, pp. 14–15, doi:<a href=\"https://doi.org/10.1109/QELS.1999.807099\">10.1109/QELS.1999.807099</a>.","chicago":"Meier, Torsten, C. Sieh, S.W. Koch, P. Brick, M. Hubner, C. Ell, J. Prineas, G. Khitrova, and H.M. Gibbs. “Influence of Carrier-Correlations on the Optical Stark Effect of Semiconductors.” In <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 14–15. IEEE, 1992. <a href=\"https://doi.org/10.1109/QELS.1999.807099\">https://doi.org/10.1109/QELS.1999.807099</a>.","short":"T. Meier, C. Sieh, S.W. Koch, P. Brick, M. Hubner, C. Ell, J. Prineas, G. Khitrova, H.M. Gibbs, in: Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, IEEE, 1992, pp. 14–15.","apa":"Meier, T., Sieh, C., Koch, S. W., Brick, P., Hubner, M., Ell, C., Prineas, J., Khitrova, G., &#38; Gibbs, H. M. (1992). Influence of carrier-correlations on the optical Stark effect of semiconductors. <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, 14–15. <a href=\"https://doi.org/10.1109/QELS.1999.807099\">https://doi.org/10.1109/QELS.1999.807099</a>","ieee":"T. Meier <i>et al.</i>, “Influence of carrier-correlations on the optical Stark effect of semiconductors,” in <i>Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference</i>, Baltimore, MD, USA, 1992, pp. 14–15, doi: <a href=\"https://doi.org/10.1109/QELS.1999.807099\">10.1109/QELS.1999.807099</a>."},"user_id":"49063","publisher":"IEEE","_id":"44290","page":"14-15","conference":{"end_date":"1992-05-28","location":"Baltimore, MD, USA","start_date":"1992-05-23","name":" Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference"},"status":"public","department":[{"_id":"293"}],"type":"conference","date_created":"2023-05-01T12:05:51Z","abstract":[{"text":"Summary form only given. For a proper understanding of nonlinear optical experiments in semiconductors even the low-density limit Coulomb-induced many body correlations beyond the Hartree-Fock decoupling scheme need to be considered. In the coherent X(3) limit these correlations manifest themselves in the contributions of bound and unbound two-exciton states to the optical response. The understanding of nonlinear excitonic effects in the Stark effect of semiconductors including carrier-correlations is still of fundamental interest.","lang":"eng"}],"extern":"1","publication":"Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference","doi":"10.1109/QELS.1999.807099","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ieeexplore.ieee.org/abstract/document/807099"}],"date_updated":"2023-05-01T12:05:55Z","publication_status":"published","author":[{"id":"344","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"first_name":"C.","last_name":"Sieh","full_name":"Sieh, C."},{"full_name":"Koch, S.W.","first_name":"S.W.","last_name":"Koch"},{"full_name":"Brick, P.","first_name":"P.","last_name":"Brick"},{"full_name":"Hubner, M.","first_name":"M.","last_name":"Hubner"},{"full_name":"Ell, C.","last_name":"Ell","first_name":"C."},{"full_name":"Prineas, J.","first_name":"J.","last_name":"Prineas"},{"full_name":"Khitrova, G.","first_name":"G.","last_name":"Khitrova"},{"full_name":"Gibbs, H.M.","last_name":"Gibbs","first_name":"H.M."}],"publication_identifier":{"isbn":["1-55752-576-X"]},"title":"Influence of carrier-correlations on the optical Stark effect of semiconductors","year":"1992"},{"conference":{"location":"Vienna, Austria","start_date":"1992-06-14","name":"International Quantum Electronics Conference 1992","end_date":"1992-06-19"},"author":[{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Schulze, A.","last_name":"Schulze","first_name":"A."},{"full_name":"Scmittrink, S.","last_name":"Scmittrink","first_name":"S."},{"last_name":"Thomas","first_name":"P.","full_name":"Thomas, P."},{"full_name":"Chuang, S.L.","last_name":"Chuang","first_name":"S.L."}],"title":"Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells","status":"public","year":"1992","date_updated":"2023-05-01T12:01:56Z","publication_status":"published","_id":"44289","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=IQEC-1992-MoP3"}],"article_number":"MoP3","user_id":"49063","citation":{"mla":"Meier, Torsten, et al. “Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells.” <i>International Quantum Electronics Conference</i>, MoP3, 1992.","ama":"Meier T, Schulze A, Scmittrink S, Thomas P, Chuang SL. Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells. In: <i>International Quantum Electronics Conference</i>. ; 1992.","bibtex":"@inproceedings{Meier_Schulze_Scmittrink_Thomas_Chuang_1992, title={Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells}, number={MoP3}, booktitle={International Quantum Electronics Conference}, author={Meier, Torsten and Schulze, A. and Scmittrink, S. and Thomas, P. and Chuang, S.L.}, year={1992} }","apa":"Meier, T., Schulze, A., Scmittrink, S., Thomas, P., &#38; Chuang, S. L. (1992). Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells. <i>International Quantum Electronics Conference</i>, Article MoP3. International Quantum Electronics Conference 1992, Vienna, Austria.","ieee":"T. Meier, A. Schulze, S. Scmittrink, P. Thomas, and S. L. Chuang, “Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells,” presented at the International Quantum Electronics Conference 1992, Vienna, Austria, 1992.","chicago":"Meier, Torsten, A. Schulze, S. Scmittrink, P. Thomas, and S.L. Chuang. “Terahertz Electromagnetic Pulse Generation and Four-Wave Mixing in Coupled Quantum Wells.” In <i>International Quantum Electronics Conference</i>, 1992.","short":"T. Meier, A. Schulze, S. Scmittrink, P. Thomas, S.L. Chuang, in: International Quantum Electronics Conference, 1992."},"publication":"International Quantum Electronics Conference","abstract":[{"lang":"eng","text":"Recent experiments by Roskos et al. in ultrashort optical pulse excitation of biased coupled quantum wells have shown remarkable generation of terahertz electromagnetic radiation. Two different effects were identified: (i) an oscillatory field of frequency corresponding to the separation between the coupled levels in the quantum-well pair (~ 1.5 THz); and (ii) an “instantaneous” electromagnetic field pulse that appears to follow the time evolution of the exciting laser pulse. The oscillatory field is understood to be caused by the coherent oscillation of optically created electrons from one well to the other.[1] The “instantaneous” part we believe is caused by a new mechanism proposed in Ref. 2. The essence of this “instantaneous” mechanism is that electron-hole pairs are created in a biased semiconductor with a net polarization. The density of these pairs follows the light field, as does the induced polarization, hence, generating an electromagnetic source that follows the light pulse. Such mechanisms have been discussed before for photon energies below the optical bandgap energy,[3] although they have so far been difficult to observe. In our work, we have generalized and extended such effects to photon energies above the handgap energy. In this paper we will discuss both of these mechanisms as well as the fourwave-mixing (FWM) signal,[4] and show how they can be understood within one unified formalism. We will also show that the calculations agree well with the experimental results."}],"extern":"1","date_created":"2023-05-01T12:01:53Z","department":[{"_id":"293"}],"type":"conference"},{"article_number":"MoC2","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=IQEC-1992-MoC2"}],"_id":"44288","language":[{"iso":"eng"}],"user_id":"49063","year":"1992","title":"On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing","status":"public","author":[{"id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","full_name":"Meier, Torsten"},{"full_name":"von Plessen, G.","last_name":"von Plessen","first_name":"G."},{"last_name":"Schulze","first_name":"A.","full_name":"Schulze, A."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."}],"conference":{"start_date":"1992-06-14","name":"International Quantum Electronics Conference 1992","location":"Vienna, Austria","end_date":"1992-06-19"},"publication_status":"published","date_updated":"2023-05-01T11:59:08Z","date_created":"2023-05-01T11:59:04Z","type":"conference","department":[{"_id":"293"}],"publication":"International Quantum Electronics Conference","citation":{"bibtex":"@inproceedings{Meier_von Plessen_Schulze_Thomas_1992, title={On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing}, number={MoC2}, booktitle={International Quantum Electronics Conference}, author={Meier, Torsten and von Plessen, G. and Schulze, A. and Thomas, P.}, year={1992} }","ama":"Meier T, von Plessen G, Schulze A, Thomas P. On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing. In: <i>International Quantum Electronics Conference</i>. ; 1992.","mla":"Meier, Torsten, et al. “On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing.” <i>International Quantum Electronics Conference</i>, MoC2, 1992.","short":"T. Meier, G. von Plessen, A. Schulze, P. Thomas, in: International Quantum Electronics Conference, 1992.","chicago":"Meier, Torsten, G. von Plessen, A. Schulze, and P. Thomas. “On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing.” In <i>International Quantum Electronics Conference</i>, 1992.","ieee":"T. Meier, G. von Plessen, A. Schulze, and P. Thomas, “On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing,” presented at the International Quantum Electronics Conference 1992, Vienna, Austria, 1992.","apa":"Meier, T., von Plessen, G., Schulze, A., &#38; Thomas, P. (1992). On the Observability of Bloch Oscillations in Time-Resolved Four-Wave-Mixing. <i>International Quantum Electronics Conference</i>, Article MoC2. International Quantum Electronics Conference 1992, Vienna, Austria."},"extern":"1","abstract":[{"text":"In the presence of a homogeneous electric field, 𝐹→, each Bloch state in a crystal changes quasimomentum according to the so-called acceleration theorem Thus, in the absence of interband tunneling and scattering processes, each Bloch state moves at a constant velocity in k-space and executes a periodic motion in the reduced zone scheme by undergoing a Bragg reflection between each two traversals of the Brillouin zone.","lang":"eng"}]}]