--- _id: '44283' abstract: - lang: eng text: "The strong influence of exciton/exciton interaction on the nonlinear optical response of the 2D exciton in GaAs quantum wells has been demonstrated in several recent experimental studies. The theoretical model for the microscopic coupling mechanism is still the subject of controversy, however. In ref. [1], we have presented a model including a density dependent coupling between opposite spin excitons which assumes that the interaction results in a renormalization of the matrix elements, dephasing rates and energies of the transition from the single-exciton state to the two-exciton state with respect to the corresponding quantities for the single exciton transitions. In contrast, Wang et al. claim that all experimental observations are explained by a density induced dephasing rate and that biexciton states play no role [2]. Here we present a new 3-pulse degenerate-four-wave-mixing (DFWM) configuration which is able to differentiate between pure local field effects and biexcitonic contributions to the time-integrated signal. Experiments were performed on an almost homogeneously broadened GaAs/Al0.3Ga0.7As single QW (well width 20 nm, photoluminescence line 0.3 meV, homogenous linewidth 0.15 meV) in the backward reflection geometry. The sample was cooled to 10 K and excited by a sequence of three pulses (1.1 ps duration) with equal intensity, wave vectors \U0001D458→1,\U0001D458→2,\U0001D458→3\r\n and delays τ12 and τ13 between the second and first and the third and first pulse, respectively. The signal was monitored in the direction \U0001D458→\U0001D460=\U0001D458→1+\U0001D458→2−\U0001D458→3\r\n which provides no signal for the chosen pulse length if local field and renormalization effects are negligible. The peak intensity of the time-integrated DFWM signal has been calculated by solving the optical Bloch for a system of two non-interacting two-level systems (2LS) with opposite circular polarization selection rules (local field effect) and for the renormalized four-level system (4LS) depicted in Fig. 1 which assumes the formation of biexcitons between excitons with opposite spins. The signal strength is proportional to the strength of the local field in the case of the 2LS and to the renormalization for the 4LS. The peak signal intensities expected for pure local field and pure biexction contributions are summarized in the second and third column of Table 1 for eight experimental configurations applying different linear and circularly polarized pulses. The values are normalized to the signal strength predicted for three parallel linearly polarized pulses. Close inspection of the data reveals remarkable differences of the peak amplitude with polarization geometry for the two coupling models." article_number: MD.5 author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: J. full_name: Kuhl, J. last_name: Kuhl - first_name: E.J. full_name: Mayer, E.J. last_name: Mayer - first_name: G.O. full_name: Smith, G.O. last_name: Smith - first_name: D. full_name: Bennhardt, D. last_name: Bennhardt - first_name: A. full_name: Schulze, A. last_name: Schulze - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: R. full_name: Hey, R. last_name: Hey - first_name: K. full_name: Ploog, K. last_name: Ploog citation: ama: 'Meier T, Kuhl J, Mayer EJ, et al. Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells. In: International Conference on Ultrafast Phenomena. ; 1994. doi:10.1364/UP.1994.MD.5' apa: Meier, T., Kuhl, J., Mayer, E. J., Smith, G. O., Bennhardt, D., Schulze, A., Thomas, P., Hey, R., & Ploog, K. (1994). Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells. International Conference on Ultrafast Phenomena, Article MD.5. International Conference on Ultrafast Phenomena 1994, California, United States. https://doi.org/10.1364/UP.1994.MD.5 bibtex: '@inproceedings{Meier_Kuhl_Mayer_Smith_Bennhardt_Schulze_Thomas_Hey_Ploog_1994, title={Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells}, DOI={10.1364/UP.1994.MD.5}, number={MD.5}, booktitle={International Conference on Ultrafast Phenomena}, author={Meier, Torsten and Kuhl, J. and Mayer, E.J. and Smith, G.O. and Bennhardt, D. and Schulze, A. and Thomas, P. and Hey, R. and Ploog, K.}, year={1994} }' chicago: Meier, Torsten, J. Kuhl, E.J. Mayer, G.O. Smith, D. Bennhardt, A. Schulze, P. Thomas, R. Hey, and K. Ploog. “Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells.” In International Conference on Ultrafast Phenomena, 1994. https://doi.org/10.1364/UP.1994.MD.5. ieee: 'T. Meier et al., “Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells,” presented at the International Conference on Ultrafast Phenomena 1994, California, United States, 1994, doi: 10.1364/UP.1994.MD.5.' mla: Meier, Torsten, et al. “Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells.” International Conference on Ultrafast Phenomena, MD.5, 1994, doi:10.1364/UP.1994.MD.5. short: 'T. Meier, J. Kuhl, E.J. Mayer, G.O. Smith, D. Bennhardt, A. Schulze, P. Thomas, R. Hey, K. Ploog, in: International Conference on Ultrafast Phenomena, 1994.' conference: end_date: 1994-05-06 location: California, United States name: International Conference on Ultrafast Phenomena 1994 start_date: 1994-05-02 date_created: 2023-05-01T11:36:11Z date_updated: 2023-05-01T11:36:15Z department: - _id: '293' doi: 10.1364/UP.1994.MD.5 extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=UP-1994-MD.5 publication: International Conference on Ultrafast Phenomena publication_status: published status: public title: Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells type: conference user_id: '49063' year: '1994' ... --- _id: '44284' abstract: - lang: eng 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. author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: E.J. full_name: Mayer, E.J. last_name: Mayer - first_name: G.O. full_name: Smith, G.O. last_name: Smith - first_name: J. full_name: Kuhl, J. last_name: Kuhl - first_name: A. full_name: Schulze, A. last_name: Schulze - first_name: D. full_name: Bennhardt, D. last_name: Bennhardt - first_name: S.W. full_name: Koch, S.W. last_name: Koch - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: R. full_name: Hey, R. last_name: Hey - first_name: K. full_name: Ploog, K. last_name: Ploog citation: 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: Proceedings of the 5th European Quantum Electronics Conference. ; 1994:187-188.' apa: Meier, T., Mayer, E. J., Smith, G. O., Kuhl, J., Schulze, A., Bennhardt, D., Koch, S. W., Thomas, P., Hey, R., & Ploog, K. (1994). Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells. Proceedings of the 5th European Quantum Electronics Conference, 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} }' 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 Proceedings of the 5th European Quantum Electronics Conference, 187–88, 1994. ieee: T. Meier et al., “Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells,” in Proceedings of the 5th European Quantum Electronics Conference, Amsterdam, Netherlands, 1994, pp. 187–188. mla: Meier, Torsten, et al. “Polarization Selection Rules for Quantum Beating between Light and Heavy Holes in GaAs Quantum Wells.” Proceedings of the 5th European Quantum Electronics Conference, 1994, pp. 187–88. 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.' conference: end_date: 1994-09-02 location: Amsterdam, Netherlands name: European Quantum Electronics Conference 1994 start_date: 1994-08-28 date_created: 2023-05-01T11:41:01Z date_updated: 2023-05-01T11:41:04Z department: - _id: '293' extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=EQEC-1994-QThB4 page: 187-188 publication: Proceedings of the 5th European Quantum Electronics Conference publication_status: published status: public title: Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells type: conference user_id: '49063' year: '1994' ... --- _id: '44282' abstract: - lang: eng 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. article_number: ThD.22 author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: E.J. full_name: Mayer, E.J. last_name: Mayer - first_name: G.O. full_name: Smith, G.O. last_name: Smith - first_name: J. full_name: Kuhl, J. last_name: Kuhl - first_name: D. full_name: Bennhardt, D. last_name: Bennhardt - first_name: A. full_name: Schulze, A. last_name: Schulze - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: R. full_name: Hey, R. last_name: Hey - first_name: K. full_name: Ploog, K. last_name: Ploog citation: ama: 'Meier T, Mayer EJ, Smith GO, et al. Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells. In: International Conference on Ultrafast Phenomena. ; 1994.' apa: Meier, T., Mayer, E. J., Smith, G. O., Kuhl, J., Bennhardt, D., Schulze, A., Thomas, P., Hey, R., & Ploog, K. (1994). Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells. International Conference on Ultrafast Phenomena, Article ThD.22. International Conference on Ultrafast Phenomena 1994, California, United States. 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} }' 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 International Conference on Ultrafast Phenomena, 1994. ieee: T. Meier et al., “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. mla: Meier, Torsten, et al. “Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells.” International Conference on Ultrafast Phenomena, ThD.22, 1994. 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.' conference: end_date: 1994-05-06 location: California, United States name: International Conference on Ultrafast Phenomena 1994 start_date: 1994-05-02 date_created: 2023-05-01T11:33:22Z date_updated: 2023-05-01T11:33:25Z department: - _id: '293' extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=UP-1994-ThD.22 publication: International Conference on Ultrafast Phenomena publication_status: published status: public title: Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells type: conference user_id: '49063' year: '1994' ... --- _id: '43600' abstract: - lang: eng 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. author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: M. full_name: Koch, M. last_name: Koch - first_name: W. full_name: Stolz, W. last_name: Stolz - first_name: J. full_name: Feldmann, J. last_name: Feldmann - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: E.O. full_name: Göbel, E.O. last_name: Göbel citation: 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: Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices. Vol 15. Superlattices and microstructures. ; 1994:329-332. doi:10.1006/spmi.1994.1064' apa: Meier, T., Koch, M., Stolz, W., Feldmann, J., Thomas, P., & Göbel, E. O. (1994). Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy. Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices, 15(3), 329–332. https://doi.org/10.1006/spmi.1994.1064 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={10.1006/spmi.1994.1064}, 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} }' 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 Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices, 15:329–32. Superlattices and Microstructures, 1994. https://doi.org/10.1006/spmi.1994.1064. 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 Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices, Banff, Canada, 1994, vol. 15, no. 3, pp. 329–332, doi: 10.1006/spmi.1994.1064.' mla: Meier, Torsten, et al. “Determination of Excitonic Binding Energies in Symmetrically Strained (GaIn)As/Ga(PAs) Multiple Quantum Wells Using Quantum Beat Spectroscopy.” Proceedings Der 7. International Conference on Superlattices, Microstructures and Microdevices, vol. 15, no. 3, 1994, pp. 329–32, doi:10.1006/spmi.1994.1064. 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.' conference: location: Banff, Canada date_created: 2023-04-15T00:05:39Z date_updated: 2023-05-01T11:37:06Z department: - _id: '293' doi: 10.1006/spmi.1994.1064 extern: '1' intvolume: ' 15' issue: '3' language: - iso: eng main_file_link: - url: https://www.sciencedirect.com/science/article/abs/pii/S0749603684710640 page: 329-332 publication: Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices publication_status: published series_title: Superlattices and microstructures status: public title: Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy type: conference user_id: '49063' volume: 15 year: '1994' ... --- _id: '44280' 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. article_number: QMC7 author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: G. full_name: von Plessen, G. last_name: von Plessen - first_name: J. full_name: Feldmann, J. last_name: Feldmann - first_name: E.O. full_name: Göbel, E.O. last_name: Göbel - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: K.W. full_name: Goossen, K.W. last_name: Goossen - first_name: J.M. full_name: Kuo, J.M. last_name: Kuo - first_name: R.F. full_name: Kopf, R.F. last_name: Kopf citation: ama: 'Meier T, von Plessen G, Feldmann J, et al. Field-induced dynamics of a wave packet in a wide superlattice miniband. In: International Quantum Electronics Conference. ; 1994.' apa: Meier, T., von Plessen, G., Feldmann, J., Göbel, E. O., Thomas, P., Goossen, K. W., Kuo, J. M., & Kopf, R. F. (1994). Field-induced dynamics of a wave packet in a wide superlattice miniband. International Quantum Electronics Conference, Article QMC7. International Quantum Electronics Conference 1994, Anaheim, California United States. 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} }' 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 International Quantum Electronics Conference, 1994. ieee: T. Meier et al., “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. mla: Meier, Torsten, et al. “Field-Induced Dynamics of a Wave Packet in a Wide Superlattice Miniband.” International Quantum Electronics Conference, QMC7, 1994. 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.' conference: end_date: 1994-05-13 location: Anaheim, California United States name: International Quantum Electronics Conference 1994 start_date: 1994-05-08 date_created: 2023-05-01T11:30:06Z date_updated: 2023-05-01T11:30:09Z department: - _id: '293' extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=IQEC-1994-QMC7 publication: International Quantum Electronics Conference publication_identifier: isbn: - 1-55752-342-8 publication_status: published status: public title: Field-induced dynamics of a wave packet in a wide superlattice miniband type: conference user_id: '49063' year: '1994' ... --- _id: '44279' abstract: - lang: eng 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. article_number: QThB5 author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: G.O. full_name: Smith, G.O. last_name: Smith - first_name: E.J. full_name: Mayer, E.J. last_name: Mayer - first_name: J. full_name: Kuhl, J. last_name: Kuhl - first_name: A. full_name: Schulze, A. last_name: Schulze - first_name: D. full_name: Bennhardt, D. last_name: Bennhardt - first_name: S.W. full_name: Koch, S.W. last_name: Koch - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: R. full_name: Hey, R. last_name: Hey - first_name: K. full_name: Ploog, K. last_name: Ploog citation: ama: 'Meier T, Smith GO, Mayer EJ, et al. Direct verification of the existence of biexcitons in GaAs qauntum wells. In: European Quantum Electronics Conference. ; 1994.' apa: Meier, T., Smith, G. O., Mayer, E. J., Kuhl, J., Schulze, A., Bennhardt, D., Koch, S. W., Thomas, P., Hey, R., & Ploog, K. (1994). Direct verification of the existence of biexcitons in GaAs qauntum wells. European Quantum Electronics Conference, Article QThB5. European Quantum Electronics Conference 1994, Amsterdam, Netherlands. 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} }' 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 European Quantum Electronics Conference, 1994. ieee: T. Meier et al., “Direct verification of the existence of biexcitons in GaAs qauntum wells,” presented at the European Quantum Electronics Conference 1994, Amsterdam, Netherlands, 1994. mla: Meier, Torsten, et al. “Direct Verification of the Existence of Biexcitons in GaAs Qauntum Wells.” European Quantum Electronics Conference, QThB5, 1994. 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.' conference: end_date: 1994-09-02 location: Amsterdam, Netherlands name: European Quantum Electronics Conference 1994 start_date: 1994-08-28 date_created: 2023-05-01T11:25:13Z date_updated: 2023-05-01T11:25:17Z department: - _id: '293' extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=EQEC-1994-QThB5 publication: European Quantum Electronics Conference publication_status: published status: public title: Direct verification of the existence of biexcitons in GaAs qauntum wells type: conference user_id: '49063' year: '1994' ... --- _id: '44285' abstract: - lang: eng 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. article_number: TuE.3 author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: M. full_name: Koch, M. last_name: Koch - first_name: F. full_name: Jahnke, F. last_name: Jahnke - first_name: J. full_name: Feldmann, J. last_name: Feldmann - first_name: W. full_name: Schäfer, W. last_name: Schäfer - first_name: P. full_name: Thomas, P. last_name: Thomas - first_name: S.W. full_name: Koch, S.W. last_name: Koch - first_name: E.O. full_name: Göbel, E.O. last_name: Göbel - first_name: H. full_name: Nickel, H. last_name: Nickel citation: 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:10.1364/UP.1994.TuE.3' apa: Meier, T., Koch, M., Jahnke, F., Feldmann, J., Schäfer, W., Thomas, P., Koch, S. W., Göbel, E. O., & Nickel, H. (1994). Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets (TuE.3). Article TuE.3. International Conference on Ultrafast Phenomena 1994, California, United States. https://doi.org/10.1364/UP.1994.TuE.3 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={10.1364/UP.1994.TuE.3}, 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} }' 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. https://doi.org/10.1364/UP.1994.TuE.3. ieee: 'T. Meier et al., “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: 10.1364/UP.1994.TuE.3.' mla: Meier, Torsten, et al. Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets. TuE.3, 1994, doi:10.1364/UP.1994.TuE.3. short: 'T. Meier, M. Koch, F. Jahnke, J. Feldmann, W. Schäfer, P. Thomas, S.W. Koch, E.O. Göbel, H. Nickel, in: 1994.' conference: end_date: 1994-05-06 location: California, United States name: International Conference on Ultrafast Phenomena 1994 start_date: 1994-05-02 date_created: 2023-05-01T11:46:18Z date_updated: 2023-05-01T11:46:21Z department: - _id: '293' doi: 10.1364/UP.1994.TuE.3 extern: '1' language: - iso: eng main_file_link: - url: https://opg.optica.org/abstract.cfm?uri=UP-1994-TuE.3 publication_status: published status: public title: Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets type: conference user_id: '49063' year: '1994' ... --- _id: '13856' author: - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: B. full_name: Wenzien, B. last_name: Wenzien - first_name: F. full_name: Bechstedt, F. last_name: Bechstedt citation: ama: Schmidt WG, Wenzien B, Bechstedt F. Chemisorption of antimony on GaAs(110). Physical Review B. 1994;49(7):4731-4744. doi:10.1103/physrevb.49.4731 apa: Schmidt, W. G., Wenzien, B., & Bechstedt, F. (1994). Chemisorption of antimony on GaAs(110). Physical Review B, 49(7), 4731–4744. https://doi.org/10.1103/physrevb.49.4731 bibtex: '@article{Schmidt_Wenzien_Bechstedt_1994, title={Chemisorption of antimony on GaAs(110)}, volume={49}, DOI={10.1103/physrevb.49.4731}, number={7}, journal={Physical Review B}, author={Schmidt, Wolf Gero and Wenzien, B. and Bechstedt, F.}, year={1994}, pages={4731–4744} }' chicago: 'Schmidt, Wolf Gero, B. Wenzien, and F. Bechstedt. “Chemisorption of Antimony on GaAs(110).” Physical Review B 49, no. 7 (1994): 4731–44. https://doi.org/10.1103/physrevb.49.4731.' ieee: 'W. G. Schmidt, B. Wenzien, and F. Bechstedt, “Chemisorption of antimony on GaAs(110),” Physical Review B, vol. 49, no. 7, pp. 4731–4744, 1994, doi: 10.1103/physrevb.49.4731.' mla: Schmidt, Wolf Gero, et al. “Chemisorption of Antimony on GaAs(110).” Physical Review B, vol. 49, no. 7, 1994, pp. 4731–44, doi:10.1103/physrevb.49.4731. short: W.G. Schmidt, B. Wenzien, F. Bechstedt, Physical Review B 49 (1994) 4731–4744. date_created: 2019-10-15T10:08:58Z date_updated: 2025-12-16T07:37:14Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' doi: 10.1103/physrevb.49.4731 intvolume: ' 49' issue: '7' language: - iso: eng page: 4731-4744 publication: Physical Review B publication_identifier: issn: - 0163-1829 - 1095-3795 publication_status: published status: public title: Chemisorption of antimony on GaAs(110) type: journal_article user_id: '16199' volume: 49 year: '1994' ... --- _id: '13855' author: - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Bernd full_name: Wenzien, Bernd last_name: Wenzien - first_name: Friedhelm full_name: Bechstedt, Friedhelm last_name: Bechstedt citation: ama: Schmidt WG, Wenzien B, Bechstedt F. Coverage-dependent bonding of Sb on GaAs (110). Surface Science. 1994;307-309(Part A):235-240. doi:10.1016/0039-6028(94)90400-6 apa: Schmidt, W. G., Wenzien, B., & Bechstedt, F. (1994). Coverage-dependent bonding of Sb on GaAs (110). Surface Science, 307–309(Part A), 235–240. https://doi.org/10.1016/0039-6028(94)90400-6 bibtex: '@article{Schmidt_Wenzien_Bechstedt_1994, title={Coverage-dependent bonding of Sb on GaAs (110)}, volume={307–309}, DOI={10.1016/0039-6028(94)90400-6}, number={Part A}, journal={Surface Science}, author={Schmidt, Wolf Gero and Wenzien, Bernd and Bechstedt, Friedhelm}, year={1994}, pages={235–240} }' chicago: 'Schmidt, Wolf Gero, Bernd Wenzien, and Friedhelm Bechstedt. “Coverage-Dependent Bonding of Sb on GaAs (110).” Surface Science 307–309, no. Part A (1994): 235–40. https://doi.org/10.1016/0039-6028(94)90400-6.' ieee: 'W. G. Schmidt, B. Wenzien, and F. Bechstedt, “Coverage-dependent bonding of Sb on GaAs (110),” Surface Science, vol. 307–309, no. Part A, pp. 235–240, 1994, doi: 10.1016/0039-6028(94)90400-6.' mla: Schmidt, Wolf Gero, et al. “Coverage-Dependent Bonding of Sb on GaAs (110).” Surface Science, vol. 307–309, no. Part A, 1994, pp. 235–40, doi:10.1016/0039-6028(94)90400-6. short: W.G. Schmidt, B. Wenzien, F. Bechstedt, Surface Science 307–309 (1994) 235–240. date_created: 2019-10-15T10:07:25Z date_updated: 2025-12-16T07:37:34Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' doi: 10.1016/0039-6028(94)90400-6 issue: Part A language: - iso: eng page: 235-240 publication: Surface Science publication_identifier: issn: - 0039-6028 publication_status: published status: public title: Coverage-dependent bonding of Sb on GaAs (110) type: journal_article user_id: '16199' volume: 307-309 year: '1994' ... --- _id: '13853' author: - first_name: F full_name: Bechstedt, F last_name: Bechstedt - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: B full_name: Wenzien, B last_name: Wenzien citation: ama: Bechstedt F, Schmidt WG, Wenzien B. Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations. Europhysics Letters (EPL). 1994;25(5):357-362. doi:10.1209/0295-5075/25/5/008 apa: Bechstedt, F., Schmidt, W. G., & Wenzien, B. (1994). Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations. Europhysics Letters (EPL), 25(5), 357–362. https://doi.org/10.1209/0295-5075/25/5/008 bibtex: '@article{Bechstedt_Schmidt_Wenzien_1994, title={Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations}, volume={25}, DOI={10.1209/0295-5075/25/5/008}, number={5}, journal={Europhysics Letters (EPL)}, author={Bechstedt, F and Schmidt, Wolf Gero and Wenzien, B}, year={1994}, pages={357–362} }' chicago: 'Bechstedt, F, Wolf Gero Schmidt, and B Wenzien. “Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations.” Europhysics Letters (EPL) 25, no. 5 (1994): 357–62. https://doi.org/10.1209/0295-5075/25/5/008.' ieee: 'F. Bechstedt, W. G. Schmidt, and B. Wenzien, “Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations,” Europhysics Letters (EPL), vol. 25, no. 5, pp. 357–362, 1994, doi: 10.1209/0295-5075/25/5/008.' mla: Bechstedt, F., et al. “Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations.” Europhysics Letters (EPL), vol. 25, no. 5, 1994, pp. 357–62, doi:10.1209/0295-5075/25/5/008. short: F. Bechstedt, W.G. Schmidt, B. Wenzien, Europhysics Letters (EPL) 25 (1994) 357–362. date_created: 2019-10-15T10:02:53Z date_updated: 2025-12-16T07:38:09Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' doi: 10.1209/0295-5075/25/5/008 intvolume: ' 25' issue: '5' language: - iso: eng page: 357-362 publication: Europhysics Letters (EPL) publication_identifier: issn: - 0295-5075 - 1286-4854 publication_status: published status: public title: Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations type: journal_article user_id: '16199' volume: 25 year: '1994' ... --- _id: '13854' author: - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: GP full_name: Srivastava, GP last_name: Srivastava citation: ama: Schmidt WG, Srivastava G. First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110). Solid State Communications. 1994;89(4):345-348. doi:10.1016/0038-1098(94)90597-5 apa: Schmidt, W. G., & Srivastava, G. (1994). First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110). Solid State Communications, 89(4), 345–348. https://doi.org/10.1016/0038-1098(94)90597-5 bibtex: '@article{Schmidt_Srivastava_1994, title={First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110)}, volume={89}, DOI={10.1016/0038-1098(94)90597-5}, number={4}, journal={Solid State Communications}, author={Schmidt, Wolf Gero and Srivastava, GP}, year={1994}, pages={345–348} }' chicago: 'Schmidt, Wolf Gero, and GP Srivastava. “First Principles Calculations of Interface Phonons of an Epitaxial Sb Monolayer on GaAs(110) and InP(110).” Solid State Communications 89, no. 4 (1994): 345–48. https://doi.org/10.1016/0038-1098(94)90597-5.' ieee: 'W. G. Schmidt and G. Srivastava, “First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110),” Solid State Communications, vol. 89, no. 4, pp. 345–348, 1994, doi: 10.1016/0038-1098(94)90597-5.' mla: Schmidt, Wolf Gero, and GP Srivastava. “First Principles Calculations of Interface Phonons of an Epitaxial Sb Monolayer on GaAs(110) and InP(110).” Solid State Communications, vol. 89, no. 4, 1994, pp. 345–48, doi:10.1016/0038-1098(94)90597-5. short: W.G. Schmidt, G. Srivastava, Solid State Communications 89 (1994) 345–348. date_created: 2019-10-15T10:05:59Z date_updated: 2025-12-16T07:37:51Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' doi: 10.1016/0038-1098(94)90597-5 intvolume: ' 89' issue: '4' language: - iso: eng page: 345-348 publication: Solid State Communications publication_identifier: issn: - 0038-1098 publication_status: published status: public title: First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110) type: journal_article user_id: '16199' volume: 89 year: '1994' ... --- _id: '35389' article_type: original author: - first_name: W. full_name: Schnepp, W. last_name: Schnepp - first_name: S. full_name: Disch, S. last_name: Disch - first_name: Claudia full_name: Schmidt, Claudia id: '466' last_name: Schmidt orcid: 0000-0003-3179-9997 citation: ama: Schnepp W, Disch S, Schmidt C. 2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings. Liquid Crystals. 1993;14(3):843-852. doi:10.1080/02678299308027761 apa: Schnepp, W., Disch, S., & Schmidt, C. (1993). 2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings. Liquid Crystals, 14(3), 843–852. https://doi.org/10.1080/02678299308027761 bibtex: '@article{Schnepp_Disch_Schmidt_1993, title={2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings}, volume={14}, DOI={10.1080/02678299308027761}, number={3}, journal={Liquid Crystals}, publisher={Informa UK Limited}, author={Schnepp, W. and Disch, S. and Schmidt, Claudia}, year={1993}, pages={843–852} }' chicago: 'Schnepp, W., S. Disch, and Claudia Schmidt. “2H NMR Study on the Lyomesophases of the System Hexaethylene Glycol Dodecyl Methyl Ether/Water Temperature Dependence of Quadrupole Splittings.” Liquid Crystals 14, no. 3 (1993): 843–52. https://doi.org/10.1080/02678299308027761.' ieee: 'W. Schnepp, S. Disch, and C. Schmidt, “2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings,” Liquid Crystals, vol. 14, no. 3, pp. 843–852, 1993, doi: 10.1080/02678299308027761.' mla: Schnepp, W., et al. “2H NMR Study on the Lyomesophases of the System Hexaethylene Glycol Dodecyl Methyl Ether/Water Temperature Dependence of Quadrupole Splittings.” Liquid Crystals, vol. 14, no. 3, Informa UK Limited, 1993, pp. 843–52, doi:10.1080/02678299308027761. short: W. Schnepp, S. Disch, C. Schmidt, Liquid Crystals 14 (1993) 843–852. date_created: 2023-01-06T13:24:06Z date_updated: 2023-01-07T10:52:32Z department: - _id: '2' - _id: '315' doi: 10.1080/02678299308027761 extern: '1' intvolume: ' 14' issue: '3' keyword: - Condensed Matter Physics - General Materials Science - General Chemistry language: - iso: eng page: 843-852 publication: Liquid Crystals publication_identifier: issn: - 0267-8292 - 1366-5855 publication_status: published publisher: Informa UK Limited quality_controlled: '1' status: public title: 2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings type: journal_article user_id: '466' volume: 14 year: '1993' ... --- _id: '35387' article_type: original author: - first_name: M. E. full_name: Rosen, M. E. last_name: Rosen - first_name: S. P. full_name: Rucker, S. P. last_name: Rucker - first_name: Claudia full_name: Schmidt, Claudia id: '466' last_name: Schmidt orcid: 0000-0003-3179-9997 - first_name: A. full_name: Pines, A. last_name: Pines citation: ama: Rosen ME, Rucker SP, Schmidt C, Pines A. Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent. The Journal of Physical Chemistry. 1993;97(15):3858-3866. doi:10.1021/j100117a037 apa: Rosen, M. E., Rucker, S. P., Schmidt, C., & Pines, A. (1993). Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent. The Journal of Physical Chemistry, 97(15), 3858–3866. https://doi.org/10.1021/j100117a037 bibtex: '@article{Rosen_Rucker_Schmidt_Pines_1993, title={Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent}, volume={97}, DOI={10.1021/j100117a037}, number={15}, journal={The Journal of Physical Chemistry}, publisher={American Chemical Society (ACS)}, author={Rosen, M. E. and Rucker, S. P. and Schmidt, Claudia and Pines, A.}, year={1993}, pages={3858–3866} }' chicago: 'Rosen, M. E., S. P. Rucker, Claudia Schmidt, and A. Pines. “Two-Dimensional Proton NMR Studies of the Conformations and Orientations of n-Alkanes in a Liquid-Crystal Solvent.” The Journal of Physical Chemistry 97, no. 15 (1993): 3858–66. https://doi.org/10.1021/j100117a037.' ieee: 'M. E. Rosen, S. P. Rucker, C. Schmidt, and A. Pines, “Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent,” The Journal of Physical Chemistry, vol. 97, no. 15, pp. 3858–3866, 1993, doi: 10.1021/j100117a037.' mla: Rosen, M. E., et al. “Two-Dimensional Proton NMR Studies of the Conformations and Orientations of n-Alkanes in a Liquid-Crystal Solvent.” The Journal of Physical Chemistry, vol. 97, no. 15, American Chemical Society (ACS), 1993, pp. 3858–66, doi:10.1021/j100117a037. short: M.E. Rosen, S.P. Rucker, C. Schmidt, A. Pines, The Journal of Physical Chemistry 97 (1993) 3858–3866. date_created: 2023-01-06T13:23:37Z date_updated: 2023-01-07T10:51:36Z department: - _id: '2' - _id: '315' doi: 10.1021/j100117a037 extern: '1' intvolume: ' 97' issue: '15' keyword: - Physical and Theoretical Chemistry - General Engineering language: - iso: eng page: 3858-3866 publication: The Journal of Physical Chemistry publication_identifier: issn: - 0022-3654 - 1541-5740 publication_status: published publisher: American Chemical Society (ACS) quality_controlled: '1' status: public title: Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent type: journal_article user_id: '466' volume: 97 year: '1993' ... --- _id: '40003' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: P. P. full_name: Crooker, P. P. last_name: Crooker citation: ama: Kitzerow H-S, Crooker PP. Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals. Liquid Crystals. 1993;13(1):31-43. doi:10.1080/02678299308029051 apa: Kitzerow, H.-S., & Crooker, P. P. (1993). Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals. Liquid Crystals, 13(1), 31–43. https://doi.org/10.1080/02678299308029051 bibtex: '@article{Kitzerow_Crooker_1993, title={Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals}, volume={13}, DOI={10.1080/02678299308029051}, number={1}, journal={Liquid Crystals}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried and Crooker, P. P.}, year={1993}, pages={31–43} }' chicago: 'Kitzerow, Heinz-Siegfried, and P. P. Crooker. “Electric Field Effects on the Droplet Structure in Polymer Dispersed Cholesteric Liquid Crystals.” Liquid Crystals 13, no. 1 (1993): 31–43. https://doi.org/10.1080/02678299308029051.' ieee: 'H.-S. Kitzerow and P. P. Crooker, “Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals,” Liquid Crystals, vol. 13, no. 1, pp. 31–43, 1993, doi: 10.1080/02678299308029051.' mla: Kitzerow, Heinz-Siegfried, and P. P. Crooker. “Electric Field Effects on the Droplet Structure in Polymer Dispersed Cholesteric Liquid Crystals.” Liquid Crystals, vol. 13, no. 1, Informa UK Limited, 1993, pp. 31–43, doi:10.1080/02678299308029051. short: H.-S. Kitzerow, P.P. Crooker, Liquid Crystals 13 (1993) 31–43. date_created: 2023-01-25T13:38:39Z date_updated: 2023-01-25T16:09:55Z department: - _id: '313' doi: 10.1080/02678299308029051 extern: '1' intvolume: ' 13' issue: '1' keyword: - Condensed Matter Physics - General Materials Science - General Chemistry language: - iso: eng page: 31-43 publication: Liquid Crystals publication_identifier: issn: - 0267-8292 - 1366-5855 publication_status: published publisher: Informa UK Limited status: public title: Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals type: journal_article user_id: '254' volume: 13 year: '1993' ... --- _id: '40005' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: H. full_name: Schmid, H. last_name: Schmid - first_name: A. full_name: Ranft, A. last_name: Ranft - first_name: G. full_name: Heppke, G. last_name: Heppke - first_name: R. A. M. full_name: Hikmet, R. A. M. last_name: Hikmet - first_name: J. full_name: Lub, J. last_name: Lub citation: ama: Kitzerow H-S, Schmid H, Ranft A, Heppke G, Hikmet RAM, Lub J. Observation of blue phases in chiral networks. Liquid Crystals. 1993;14(3):911-916. doi:10.1080/02678299308027768 apa: Kitzerow, H.-S., Schmid, H., Ranft, A., Heppke, G., Hikmet, R. A. M., & Lub, J. (1993). Observation of blue phases in chiral networks. Liquid Crystals, 14(3), 911–916. https://doi.org/10.1080/02678299308027768 bibtex: '@article{Kitzerow_Schmid_Ranft_Heppke_Hikmet_Lub_1993, title={Observation of blue phases in chiral networks}, volume={14}, DOI={10.1080/02678299308027768}, number={3}, journal={Liquid Crystals}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried and Schmid, H. and Ranft, A. and Heppke, G. and Hikmet, R. A. M. and Lub, J.}, year={1993}, pages={911–916} }' chicago: 'Kitzerow, Heinz-Siegfried, H. Schmid, A. Ranft, G. Heppke, R. A. M. Hikmet, and J. Lub. “Observation of Blue Phases in Chiral Networks.” Liquid Crystals 14, no. 3 (1993): 911–16. https://doi.org/10.1080/02678299308027768.' ieee: 'H.-S. Kitzerow, H. Schmid, A. Ranft, G. Heppke, R. A. M. Hikmet, and J. Lub, “Observation of blue phases in chiral networks,” Liquid Crystals, vol. 14, no. 3, pp. 911–916, 1993, doi: 10.1080/02678299308027768.' mla: Kitzerow, Heinz-Siegfried, et al. “Observation of Blue Phases in Chiral Networks.” Liquid Crystals, vol. 14, no. 3, Informa UK Limited, 1993, pp. 911–16, doi:10.1080/02678299308027768. short: H.-S. Kitzerow, H. Schmid, A. Ranft, G. Heppke, R.A.M. Hikmet, J. Lub, Liquid Crystals 14 (1993) 911–916. date_created: 2023-01-25T13:41:04Z date_updated: 2023-01-25T16:13:16Z department: - _id: '313' doi: 10.1080/02678299308027768 extern: '1' intvolume: ' 14' issue: '3' keyword: - Condensed Matter Physics - General Materials Science - General Chemistry language: - iso: eng page: 911-916 publication: Liquid Crystals publication_identifier: issn: - 0267-8292 - 1366-5855 publication_status: published publisher: Informa UK Limited status: public title: Observation of blue phases in chiral networks type: journal_article user_id: '254' volume: 14 year: '1993' ... --- _id: '40074' author: - first_name: V. K. full_name: Dolganov, V. K. last_name: Dolganov - first_name: O. R. full_name: Lourie, O. R. last_name: Lourie - first_name: G. full_name: Heppke, G. last_name: Heppke - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Dolganov VK, Lourie OR, Heppke G, Kitzerow H-S. Anomalies of the temperature dependence of electrostriction in blue phases. Journal de Physique II. 1993;3(7):1087-1096. doi:10.1051/jp2:1993185 apa: Dolganov, V. K., Lourie, O. R., Heppke, G., & Kitzerow, H.-S. (1993). Anomalies of the temperature dependence of electrostriction in blue phases. Journal de Physique II, 3(7), 1087–1096. https://doi.org/10.1051/jp2:1993185 bibtex: '@article{Dolganov_Lourie_Heppke_Kitzerow_1993, title={Anomalies of the temperature dependence of electrostriction in blue phases}, volume={3}, DOI={10.1051/jp2:1993185}, number={7}, journal={Journal de Physique II}, publisher={EDP Sciences}, author={Dolganov, V. K. and Lourie, O. R. and Heppke, G. and Kitzerow, Heinz-Siegfried}, year={1993}, pages={1087–1096} }' chicago: 'Dolganov, V. K., O. R. Lourie, G. Heppke, and Heinz-Siegfried Kitzerow. “Anomalies of the Temperature Dependence of Electrostriction in Blue Phases.” Journal de Physique II 3, no. 7 (1993): 1087–96. https://doi.org/10.1051/jp2:1993185.' ieee: 'V. K. Dolganov, O. R. Lourie, G. Heppke, and H.-S. Kitzerow, “Anomalies of the temperature dependence of electrostriction in blue phases,” Journal de Physique II, vol. 3, no. 7, pp. 1087–1096, 1993, doi: 10.1051/jp2:1993185.' mla: Dolganov, V. K., et al. “Anomalies of the Temperature Dependence of Electrostriction in Blue Phases.” Journal de Physique II, vol. 3, no. 7, EDP Sciences, 1993, pp. 1087–96, doi:10.1051/jp2:1993185. short: V.K. Dolganov, O.R. Lourie, G. Heppke, H.-S. Kitzerow, Journal de Physique II 3 (1993) 1087–1096. date_created: 2023-01-25T15:53:47Z date_updated: 2023-01-25T16:03:07Z department: - _id: '313' doi: 10.1051/jp2:1993185 extern: '1' intvolume: ' 3' issue: '7' keyword: - Physics and Astronomy (miscellaneous) - General Engineering - Atomic and Molecular Physics - and Optics language: - iso: eng page: 1087-1096 publication: Journal de Physique II publication_identifier: issn: - 1155-4312 - 1286-4870 publication_status: published publisher: EDP Sciences status: public title: Anomalies of the temperature dependence of electrostriction in blue phases type: journal_article user_id: '254' volume: 3 year: '1993' ... --- _id: '40071' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: P. P. full_name: Crooker, P. P. last_name: Crooker citation: ama: Kitzerow H-S, Crooker PP. UV-cured cholesteric polymer-dispersed liquid crystal display. Journal de Physique II. 1993;3(5):719-726. doi:10.1051/jp2:1993162 apa: Kitzerow, H.-S., & Crooker, P. P. (1993). UV-cured cholesteric polymer-dispersed liquid crystal display. Journal de Physique II, 3(5), 719–726. https://doi.org/10.1051/jp2:1993162 bibtex: '@article{Kitzerow_Crooker_1993, title={UV-cured cholesteric polymer-dispersed liquid crystal display}, volume={3}, DOI={10.1051/jp2:1993162}, number={5}, journal={Journal de Physique II}, publisher={EDP Sciences}, author={Kitzerow, Heinz-Siegfried and Crooker, P. P.}, year={1993}, pages={719–726} }' chicago: 'Kitzerow, Heinz-Siegfried, and P. P. Crooker. “UV-Cured Cholesteric Polymer-Dispersed Liquid Crystal Display.” Journal de Physique II 3, no. 5 (1993): 719–26. https://doi.org/10.1051/jp2:1993162.' ieee: 'H.-S. Kitzerow and P. P. Crooker, “UV-cured cholesteric polymer-dispersed liquid crystal display,” Journal de Physique II, vol. 3, no. 5, pp. 719–726, 1993, doi: 10.1051/jp2:1993162.' mla: Kitzerow, Heinz-Siegfried, and P. P. Crooker. “UV-Cured Cholesteric Polymer-Dispersed Liquid Crystal Display.” Journal de Physique II, vol. 3, no. 5, EDP Sciences, 1993, pp. 719–26, doi:10.1051/jp2:1993162. short: H.-S. Kitzerow, P.P. Crooker, Journal de Physique II 3 (1993) 719–726. date_created: 2023-01-25T15:50:06Z date_updated: 2023-01-25T16:03:16Z department: - _id: '313' doi: 10.1051/jp2:1993162 extern: '1' intvolume: ' 3' issue: '5' keyword: - Physics and Astronomy (miscellaneous) - General Engineering - Atomic and Molecular Physics - and Optics language: - iso: eng page: 719-726 publication: Journal de Physique II publication_identifier: issn: - 1155-4312 - 1286-4870 publication_status: published publisher: EDP Sciences status: public title: UV-cured cholesteric polymer-dispersed liquid crystal display type: journal_article user_id: '254' volume: 3 year: '1993' ... --- _id: '40516' author: - first_name: H. full_name: Molsen, H. last_name: Molsen - first_name: R. full_name: Bardon, R. last_name: Bardon - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: 'Molsen H, Bardon R, Kitzerow H-S. Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals. In: SID Conference Proceedings, 13th International Display Research Conference. Society for Information Display (SID); 1993:113-116.' apa: Molsen, H., Bardon, R., & Kitzerow, H.-S. (1993). Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals. SID Conference Proceedings, 13th International Display Research Conference, 113–116. bibtex: '@inproceedings{Molsen_Bardon_Kitzerow_1993, place={Strasbourg}, title={Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals}, booktitle={SID Conference Proceedings, 13th International Display Research Conference}, publisher={Society for Information Display (SID)}, author={Molsen, H. and Bardon, R. and Kitzerow, Heinz-Siegfried}, year={1993}, pages={113–116} }' chicago: 'Molsen, H., R. Bardon, and Heinz-Siegfried Kitzerow. “Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals.” In SID Conference Proceedings, 13th International Display Research Conference, 113–16. Strasbourg: Society for Information Display (SID), 1993.' ieee: H. Molsen, R. Bardon, and H.-S. Kitzerow, “Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals,” in SID Conference Proceedings, 13th International Display Research Conference, 1993, pp. 113–116. mla: Molsen, H., et al. “Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals.” SID Conference Proceedings, 13th International Display Research Conference, Society for Information Display (SID), 1993, pp. 113–16. short: 'H. Molsen, R. Bardon, H.-S. Kitzerow, in: SID Conference Proceedings, 13th International Display Research Conference, Society for Information Display (SID), Strasbourg, 1993, pp. 113–116.' date_created: 2023-01-27T13:00:25Z date_updated: 2023-01-27T14:04:29Z department: - _id: '313' extern: '1' language: - iso: eng page: 113-116 place: Strasbourg publication: SID Conference Proceedings, 13th International Display Research Conference publisher: Society for Information Display (SID) status: public title: Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals type: conference user_id: '254' year: '1993' ... --- _id: '40327' author: - first_name: G. full_name: Heppke, G. last_name: Heppke - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: H. full_name: Molsen, H. last_name: Molsen citation: ama: Heppke G, Kitzerow H-S, Molsen H. Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal. Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals. 1993;237(1):471-476. doi:10.1080/10587259308030159 apa: Heppke, G., Kitzerow, H.-S., & Molsen, H. (1993). Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 237(1), 471–476. https://doi.org/10.1080/10587259308030159 bibtex: '@article{Heppke_Kitzerow_Molsen_1993, title={Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal}, volume={237}, DOI={10.1080/10587259308030159}, number={1}, journal={Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals}, publisher={Informa UK Limited}, author={Heppke, G. and Kitzerow, Heinz-Siegfried and Molsen, H.}, year={1993}, pages={471–476} }' chicago: 'Heppke, G., Heinz-Siegfried Kitzerow, and H. Molsen. “Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal.” Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 237, no. 1 (1993): 471–76. https://doi.org/10.1080/10587259308030159.' ieee: 'G. Heppke, H.-S. Kitzerow, and H. Molsen, “Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal,” Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, vol. 237, no. 1, pp. 471–476, 1993, doi: 10.1080/10587259308030159.' mla: Heppke, G., et al. “Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal.” Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, vol. 237, no. 1, Informa UK Limited, 1993, pp. 471–76, doi:10.1080/10587259308030159. short: G. Heppke, H.-S. Kitzerow, H. Molsen, Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 237 (1993) 471–476. date_created: 2023-01-26T11:19:53Z date_updated: 2023-01-26T11:49:40Z department: - _id: '313' doi: 10.1080/10587259308030159 extern: '1' intvolume: ' 237' issue: '1' keyword: - Condensed Matter Physics language: - iso: eng page: 471-476 publication: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals publication_identifier: issn: - 1058-725X publication_status: published publisher: Informa UK Limited status: public title: Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal type: journal_article user_id: '254' volume: 237 year: '1993' ... --- _id: '40324' author: - first_name: D. full_name: Krüerke, D. last_name: Krüerke - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: G. full_name: Heppke, G. last_name: Heppke - first_name: V. full_name: Vill, V. last_name: Vill citation: ama: Krüerke D, Kitzerow H-S, Heppke G, Vill V. First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals. Berichte der Bunsengesellschaft für physikalische Chemie. 1993;97(10):1371-1375. doi:10.1002/bbpc.19930971032 apa: Krüerke, D., Kitzerow, H.-S., Heppke, G., & Vill, V. (1993). First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals. Berichte Der Bunsengesellschaft Für Physikalische Chemie, 97(10), 1371–1375. https://doi.org/10.1002/bbpc.19930971032 bibtex: '@article{Krüerke_Kitzerow_Heppke_Vill_1993, title={First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals}, volume={97}, DOI={10.1002/bbpc.19930971032}, number={10}, journal={Berichte der Bunsengesellschaft für physikalische Chemie}, publisher={Wiley}, author={Krüerke, D. and Kitzerow, Heinz-Siegfried and Heppke, G. and Vill, V.}, year={1993}, pages={1371–1375} }' chicago: 'Krüerke, D., Heinz-Siegfried Kitzerow, G. Heppke, and V. Vill. “First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals.” Berichte Der Bunsengesellschaft Für Physikalische Chemie 97, no. 10 (1993): 1371–75. https://doi.org/10.1002/bbpc.19930971032.' ieee: 'D. Krüerke, H.-S. Kitzerow, G. Heppke, and V. Vill, “First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals,” Berichte der Bunsengesellschaft für physikalische Chemie, vol. 97, no. 10, pp. 1371–1375, 1993, doi: 10.1002/bbpc.19930971032.' mla: Krüerke, D., et al. “First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals.” Berichte Der Bunsengesellschaft Für Physikalische Chemie, vol. 97, no. 10, Wiley, 1993, pp. 1371–75, doi:10.1002/bbpc.19930971032. short: D. Krüerke, H.-S. Kitzerow, G. Heppke, V. Vill, Berichte Der Bunsengesellschaft Für Physikalische Chemie 97 (1993) 1371–1375. date_created: 2023-01-26T11:10:52Z date_updated: 2023-01-26T11:49:23Z department: - _id: '313' doi: 10.1002/bbpc.19930971032 extern: '1' intvolume: ' 97' issue: '10' keyword: - General Chemical Engineering language: - iso: eng page: 1371-1375 publication: Berichte der Bunsengesellschaft für physikalische Chemie publication_identifier: issn: - 0005-9021 publication_status: published publisher: Wiley status: public title: First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals type: journal_article user_id: '254' volume: 97 year: '1993' ...