[{"type":"book_chapter","department":[{"_id":"293"}],"date_created":"2023-04-01T22:57:47Z","extern":"1","abstract":[{"lang":"eng","text":"The linear and nonlinear optical properties of semiconductors are strongly influenced by the Coulomb interaction among the photoexcited carriers. Within the framework of the semiconductor Bloch equations such many-body effects can be described on the basis of a microscopic theory. In this article, we briefly review our recent contributions to two specific topics. First, the coherent optical generation of charge and spin currents and their subsequent decay via scattering processes is discussed. As a second example, the spatially-inhomogeneous optical properties of hybrid structures which consist of photonic crystals and semiconductor nanostructures are described. Many of the numerical results have been obtained using massively parallel computer programs which were run on the IBM p690-Cluster Jump in Jülich."}],"publication":"Germany in NIC Series Vol. 32","main_file_link":[{"open_access":"1","url":"https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=11dbc03d265593db1a75637947a3265ac044782f"}],"language":[{"iso":"eng"}],"series_title":"NIC Symposium 2006 - Proceedings","publication_status":"published","date_updated":"2023-04-02T13:47:07Z","year":"2006","title":"Computational Optoelectronics of Semiconductor Nanostructures including Many-Body Effects","author":[{"full_name":"Meier, Torsten","first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344"},{"full_name":"Duc, Huynh Thanh","first_name":"Huynh Thanh","last_name":"Duc"},{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"first_name":"B.","last_name":"Pasenow","full_name":"Pasenow, B."},{"last_name":"Stroucken","first_name":"T.","full_name":"Stroucken, T."},{"full_name":"Koch, S.W.","last_name":"Koch","first_name":"S.W."}],"publication_identifier":{"isbn":["3-00-017351-X"]},"oa":"1","place":"Jülich","citation":{"apa":"Meier, T., Duc, H. T., Reichelt, M., Pasenow, B., Stroucken, T., &#38; Koch, S. W. (2006). Computational Optoelectronics of Semiconductor Nanostructures including Many-Body Effects. In G. Munster, D. Wolf, &#38; M. Kremer (Eds.), <i>Germany in NIC Series Vol. 32</i> (pp. 219–226). John von Neumann Institute for Computing.","ieee":"T. Meier, H. T. Duc, M. Reichelt, B. Pasenow, T. Stroucken, and S. W. Koch, “Computational Optoelectronics of Semiconductor Nanostructures including Many-Body Effects,” in <i>Germany in NIC Series Vol. 32</i>, G. Munster, D. Wolf, and M. Kremer, Eds. Jülich: John von Neumann Institute for Computing, 2006, pp. 219–226.","short":"T. Meier, H.T. Duc, M. Reichelt, B. Pasenow, T. Stroucken, S.W. Koch, in: G. Munster, D. Wolf, M. Kremer (Eds.), Germany in NIC Series Vol. 32, John von Neumann Institute for Computing, Jülich, 2006, pp. 219–226.","chicago":"Meier, Torsten, Huynh Thanh Duc, Matthias Reichelt, B. Pasenow, T. Stroucken, and S.W. Koch. “Computational Optoelectronics of Semiconductor Nanostructures Including Many-Body Effects.” In <i>Germany in NIC Series Vol. 32</i>, edited by G. Munster, D. Wolf, and M. Kremer, 219–26. NIC Symposium 2006 - Proceedings. Jülich: John von Neumann Institute for Computing, 2006.","mla":"Meier, Torsten, et al. “Computational Optoelectronics of Semiconductor Nanostructures Including Many-Body Effects.” <i>Germany in NIC Series Vol. 32</i>, edited by G. Munster et al., John von Neumann Institute for Computing, 2006, pp. 219–26.","ama":"Meier T, Duc HT, Reichelt M, Pasenow B, Stroucken T, Koch SW. Computational Optoelectronics of Semiconductor Nanostructures including Many-Body Effects. In: Munster G, Wolf D, Kremer M, eds. <i>Germany in NIC Series Vol. 32</i>. NIC Symposium 2006 - Proceedings. John von Neumann Institute for Computing; 2006:219-226.","bibtex":"@inbook{Meier_Duc_Reichelt_Pasenow_Stroucken_Koch_2006, place={Jülich}, series={NIC Symposium 2006 - Proceedings}, title={Computational Optoelectronics of Semiconductor Nanostructures including Many-Body Effects}, booktitle={Germany in NIC Series Vol. 32}, publisher={John von Neumann Institute for Computing}, author={Meier, Torsten and Duc, Huynh Thanh and Reichelt, Matthias and Pasenow, B. and Stroucken, T. and Koch, S.W.}, editor={Munster, G. and Wolf, D. and Kremer, M.}, year={2006}, pages={219–226}, collection={NIC Symposium 2006 - Proceedings} }"},"user_id":"49063","editor":[{"first_name":"G.","last_name":"Munster","full_name":"Munster, G."},{"full_name":"Wolf, D.","last_name":"Wolf","first_name":"D."},{"full_name":"Kremer, M.","last_name":"Kremer","first_name":"M."}],"page":"219-226","publisher":"John von Neumann Institute for Computing","_id":"43270","status":"public"},{"volume":71,"user_id":"49063","publisher":"035346","_id":"43271","status":"public","citation":{"ama":"Reichelt M, Pasenow B, Meier T, Stroucken T, Koch SW.  Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures. <i>Physical Review B</i>. 2005;71(3). doi:<a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">10.1103/PhysRevB.71.035346</a>","bibtex":"@article{Reichelt_Pasenow_Meier_Stroucken_Koch_2005, title={ Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures}, volume={71}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">10.1103/PhysRevB.71.035346</a>}, number={3035346}, journal={Physical Review B}, publisher={035346}, author={Reichelt, Matthias and Pasenow, B. and Meier, Torsten and Stroucken, T. and Koch, S.W.}, year={2005} }","mla":"Reichelt, Matthias, et al. “ Spatially Inhomogeneous Optical Gain in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i>, vol. 71, no. 3, 035346, 035346, 2005, doi:<a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">10.1103/PhysRevB.71.035346</a>.","chicago":"Reichelt, Matthias, B. Pasenow, Torsten Meier, T. Stroucken, and S.W. Koch. “ Spatially Inhomogeneous Optical Gain in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i> 71, no. 3 (2005). <a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">https://doi.org/10.1103/PhysRevB.71.035346</a>.","short":"M. Reichelt, B. Pasenow, T. Meier, T. Stroucken, S.W. Koch, Physical Review B 71 (2005).","apa":"Reichelt, M., Pasenow, B., Meier, T., Stroucken, T., &#38; Koch, S. W. (2005).  Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures. <i>Physical Review B</i>, <i>71</i>(3), Article 035346. <a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">https://doi.org/10.1103/PhysRevB.71.035346</a>","ieee":"M. Reichelt, B. Pasenow, T. Meier, T. Stroucken, and S. W. Koch, “ Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures,” <i>Physical Review B</i>, vol. 71, no. 3, Art. no. 035346, 2005, doi: <a href=\"https://doi.org/10.1103/PhysRevB.71.035346\">10.1103/PhysRevB.71.035346</a>."},"doi":"10.1103/PhysRevB.71.035346","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.71.035346"}],"article_number":"035346","intvolume":"        71","date_updated":"2023-04-01T23:00:25Z","publication_status":"published","author":[{"last_name":"Reichelt","first_name":"Matthias","full_name":"Reichelt, Matthias","id":"138"},{"last_name":"Pasenow","first_name":"B.","full_name":"Pasenow, B."},{"id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten","full_name":"Meier, Torsten"},{"last_name":"Stroucken","first_name":"T.","full_name":"Stroucken, T."},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."}],"title":" Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures","year":"2005","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-01T23:00:22Z","abstract":[{"text":"The optical and electronic properties of semiconductor heterostructures in the vicinity of photonic crystals are discussed. The theoretical approach provides a self-consistent solution of the dynamics of the electromagnetic field and the material excitations. Due to the influence of the structured dielectric environment on the Coulomb interaction, the exciton resonances and the quasiequilibrium carrier densities in the spatially homogeneous semiconductor become space dependent. It is demonstrated that these inhomogeneities lead to distinct modifications of the optical absorption and gain spectra. As an application, numerically calculated density-dependent optical spectra are analyzed for an array of semiconductor quantum wires which are close to a two-dimensional photonic crystal. The spatial inhomogeneities result in novel excitonic absorption features and modification of the optical gain in these structures.","lang":"eng"}],"extern":"1","publication":"Physical Review B","issue":"3"},{"intvolume":"        22","publication_status":"published","date_updated":"2023-04-24T06:02:06Z","publication_identifier":{"issn":["0740-3224","1520-8540"]},"author":[{"first_name":"Bernhard","last_name":"Pasenow","full_name":"Pasenow, Bernhard"},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"last_name":"Stroucken","first_name":"Tineke","full_name":"Stroucken, Tineke"},{"id":"344","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"last_name":"Koch","first_name":"Stephan W.","full_name":"Koch, Stephan W."},{"first_name":"Aramis R.","last_name":"Zakharian","full_name":"Zakharian, Aramis R."},{"last_name":"Moloney","first_name":"Jerome V.","full_name":"Moloney, Jerome V."}],"year":"2005","title":"Enhanced light-matter interaction in semiconductor heterostructures embedded in one-dimensional photonic crystals","doi":"10.1364/josab.22.002039","language":[{"iso":"eng"}],"extern":"1","abstract":[{"text":"The optical properties of semiconductor quantum wells embedded in one-dimensional photonic crystal structures are analyzed by a self-consistent solution of Maxwell’s equations and a microscopic many-body theory of the material excitations. For a field mode spectrally below the photonic band edge it is shown that the optical absorption and gain are enhanced, exceeding by more than 1 order of magnitude the values of a homogeneous medium. For the photonic crystal structure inside a microcavity the gain increases superlinearly with the number of wells and for more than five wells exceeds the gain of a corresponding vertical-cavity surface-emitting laser.","lang":"eng"}],"publication":"Journal of the Optical Society of America B","issue":"9","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"}],"type":"journal_article","date_created":"2021-08-24T09:28:32Z","status":"public","volume":22,"user_id":"49063","_id":"23506","page":"2039-2048","citation":{"ieee":"B. Pasenow <i>et al.</i>, “Enhanced light-matter interaction in semiconductor heterostructures embedded in one-dimensional photonic crystals,” <i>Journal of the Optical Society of America B</i>, vol. 22, no. 9, pp. 2039–2048, 2005, doi: <a href=\"https://doi.org/10.1364/josab.22.002039\">10.1364/josab.22.002039</a>.","apa":"Pasenow, B., Reichelt, M., Stroucken, T., Meier, T., Koch, S. W., Zakharian, A. R., &#38; Moloney, J. V. (2005). Enhanced light-matter interaction in semiconductor heterostructures embedded in one-dimensional photonic crystals. <i>Journal of the Optical Society of America B</i>, <i>22</i>(9), 2039–2048. <a href=\"https://doi.org/10.1364/josab.22.002039\">https://doi.org/10.1364/josab.22.002039</a>","short":"B. Pasenow, M. Reichelt, T. Stroucken, T. Meier, S.W. Koch, A.R. Zakharian, J.V. Moloney, Journal of the Optical Society of America B 22 (2005) 2039–2048.","chicago":"Pasenow, Bernhard, Matthias Reichelt, Tineke Stroucken, Torsten Meier, Stephan W. Koch, Aramis R. Zakharian, and Jerome V. Moloney. “Enhanced Light-Matter Interaction in Semiconductor Heterostructures Embedded in One-Dimensional Photonic Crystals.” <i>Journal of the Optical Society of America B</i> 22, no. 9 (2005): 2039–48. <a href=\"https://doi.org/10.1364/josab.22.002039\">https://doi.org/10.1364/josab.22.002039</a>.","mla":"Pasenow, Bernhard, et al. “Enhanced Light-Matter Interaction in Semiconductor Heterostructures Embedded in One-Dimensional Photonic Crystals.” <i>Journal of the Optical Society of America B</i>, vol. 22, no. 9, 2005, pp. 2039–48, doi:<a href=\"https://doi.org/10.1364/josab.22.002039\">10.1364/josab.22.002039</a>.","bibtex":"@article{Pasenow_Reichelt_Stroucken_Meier_Koch_Zakharian_Moloney_2005, title={Enhanced light-matter interaction in semiconductor heterostructures embedded in one-dimensional photonic crystals}, volume={22}, DOI={<a href=\"https://doi.org/10.1364/josab.22.002039\">10.1364/josab.22.002039</a>}, number={9}, journal={Journal of the Optical Society of America B}, author={Pasenow, Bernhard and Reichelt, Matthias and Stroucken, Tineke and Meier, Torsten and Koch, Stephan W. and Zakharian, Aramis R. and Moloney, Jerome V.}, year={2005}, pages={2039–2048} }","ama":"Pasenow B, Reichelt M, Stroucken T, et al. Enhanced light-matter interaction in semiconductor heterostructures embedded in one-dimensional photonic crystals. <i>Journal of the Optical Society of America B</i>. 2005;22(9):2039-2048. doi:<a href=\"https://doi.org/10.1364/josab.22.002039\">10.1364/josab.22.002039</a>"}},{"citation":{"apa":"Pasenow, B., Reichelt, M., Stroucken, T., Meier, T., &#38; Koch, S. W. (2005). Excitonic wave packet dynamics in semiconductor photonic-crystal structures. <i>Physical Review B</i>, <i>71</i>(19), 195321. <a href=\"https://doi.org/10.1103/physrevb.71.195321\">https://doi.org/10.1103/physrevb.71.195321</a>","ieee":"B. Pasenow, M. Reichelt, T. Stroucken, T. Meier, and S. W. Koch, “Excitonic wave packet dynamics in semiconductor photonic-crystal structures,” <i>Physical Review B</i>, vol. 71, no. 19, p. 195321, 2005, doi: <a href=\"https://doi.org/10.1103/physrevb.71.195321\">10.1103/physrevb.71.195321</a>.","chicago":"Pasenow, B., Matthias Reichelt, T. Stroucken, Torsten Meier, and S. W. Koch. “Excitonic Wave Packet Dynamics in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i> 71, no. 19 (2005): 195321. <a href=\"https://doi.org/10.1103/physrevb.71.195321\">https://doi.org/10.1103/physrevb.71.195321</a>.","short":"B. Pasenow, M. Reichelt, T. Stroucken, T. Meier, S.W. Koch, Physical Review B 71 (2005) 195321.","mla":"Pasenow, B., et al. “Excitonic Wave Packet Dynamics in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i>, vol. 71, no. 19, 2005, p. 195321, doi:<a href=\"https://doi.org/10.1103/physrevb.71.195321\">10.1103/physrevb.71.195321</a>.","ama":"Pasenow B, Reichelt M, Stroucken T, Meier T, Koch SW. Excitonic wave packet dynamics in semiconductor photonic-crystal structures. <i>Physical Review B</i>. 2005;71(19):195321. doi:<a href=\"https://doi.org/10.1103/physrevb.71.195321\">10.1103/physrevb.71.195321</a>","bibtex":"@article{Pasenow_Reichelt_Stroucken_Meier_Koch_2005, title={Excitonic wave packet dynamics in semiconductor photonic-crystal structures}, volume={71}, DOI={<a href=\"https://doi.org/10.1103/physrevb.71.195321\">10.1103/physrevb.71.195321</a>}, number={19}, journal={Physical Review B}, author={Pasenow, B. and Reichelt, Matthias and Stroucken, T. and Meier, Torsten and Koch, S. W.}, year={2005}, pages={195321} }"},"status":"public","page":"195321","_id":"23502","user_id":"49063","volume":71,"publication":"Physical Review B","issue":"19","abstract":[{"lang":"eng","text":"Significant aspects of the light–matter interaction can be strongly modified in suitably designed systems consisting of semiconductor nanostructures and dielectric photonic crystals. To analyze such effects, a microscopic theory is presented, which is capable of describing the optoelectronic properties of such hybrid systems via a self-consistent solution of the dynamics of the optical field and the photoexcitations of the material. The theory is applied to investigate the local excitonic resonances, which arise as a consequence of the modified Coulomb interaction in the vicinity of a structured dielectric medium. The excitation of a coherent superposition of the spatially inhomogeneous optical transitions induces an intricate wave packet dynamics. In the presence of dephasing and relaxation processes, the coherent oscillations are damped and the photoexcited carriers relax into spatially inhomogeneous quasi-equilibrium distributions."}],"extern":"1","date_created":"2021-08-24T09:25:03Z","type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"}],"title":"Excitonic wave packet dynamics in semiconductor photonic-crystal structures","year":"2005","publication_identifier":{"issn":["1098-0121","1550-235X"]},"author":[{"full_name":"Pasenow, B.","first_name":"B.","last_name":"Pasenow"},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"first_name":"T.","last_name":"Stroucken","full_name":"Stroucken, T."},{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Koch, S. W.","last_name":"Koch","first_name":"S. W."}],"date_updated":"2023-04-24T06:07:42Z","publication_status":"published","intvolume":"        71","language":[{"iso":"eng"}],"doi":"10.1103/physrevb.71.195321"},{"status":"public","_id":"23496","user_id":"49063","volume":71,"citation":{"ieee":"M. Reichelt, B. Pasenow, T. Meier, T. Stroucken, and S. W. Koch, “Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures,” <i>Physical Review B</i>, vol. 71, no. 3, Art. no. 035346, 2005, doi: <a href=\"https://doi.org/10.1103/physrevb.71.035346\">10.1103/physrevb.71.035346</a>.","apa":"Reichelt, M., Pasenow, B., Meier, T., Stroucken, T., &#38; Koch, S. W. (2005). Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures. <i>Physical Review B</i>, <i>71</i>(3), Article 035346. <a href=\"https://doi.org/10.1103/physrevb.71.035346\">https://doi.org/10.1103/physrevb.71.035346</a>","short":"M. Reichelt, B. Pasenow, T. Meier, T. Stroucken, S.W. Koch, Physical Review B 71 (2005).","chicago":"Reichelt, Matthias, B. Pasenow, Torsten Meier, T. Stroucken, and S. W. Koch. “Spatially Inhomogeneous Optical Gain in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i> 71, no. 3 (2005). <a href=\"https://doi.org/10.1103/physrevb.71.035346\">https://doi.org/10.1103/physrevb.71.035346</a>.","mla":"Reichelt, Matthias, et al. “Spatially Inhomogeneous Optical Gain in Semiconductor Photonic-Crystal Structures.” <i>Physical Review B</i>, vol. 71, no. 3, 035346, 2005, doi:<a href=\"https://doi.org/10.1103/physrevb.71.035346\">10.1103/physrevb.71.035346</a>.","bibtex":"@article{Reichelt_Pasenow_Meier_Stroucken_Koch_2005, title={Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures}, volume={71}, DOI={<a href=\"https://doi.org/10.1103/physrevb.71.035346\">10.1103/physrevb.71.035346</a>}, number={3035346}, journal={Physical Review B}, author={Reichelt, Matthias and Pasenow, B. and Meier, Torsten and Stroucken, T. and Koch, S. W.}, year={2005} }","ama":"Reichelt M, Pasenow B, Meier T, Stroucken T, Koch SW. Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures. <i>Physical Review B</i>. 2005;71(3). doi:<a href=\"https://doi.org/10.1103/physrevb.71.035346\">10.1103/physrevb.71.035346</a>"},"title":"Spatially inhomogeneous optical gain in semiconductor photonic-crystal structures","year":"2005","author":[{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"last_name":"Pasenow","first_name":"B.","full_name":"Pasenow, B."},{"last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten","full_name":"Meier, Torsten","id":"344"},{"last_name":"Stroucken","first_name":"T.","full_name":"Stroucken, T."},{"first_name":"S. W.","last_name":"Koch","full_name":"Koch, S. W."}],"publication_identifier":{"issn":["1098-0121","1550-235X"]},"publication_status":"published","date_updated":"2023-04-24T06:15:10Z","intvolume":"        71","article_number":"035346","language":[{"iso":"eng"}],"doi":"10.1103/physrevb.71.035346","issue":"3","publication":"Physical Review B","extern":"1","abstract":[{"text":"The optical and electronic properties of semiconductor heterostructures in the vicinity of photonic crystals are discussed. The theoretical approach provides a self-consistent solution of the dynamics of the electromagnetic field and the material excitations. Due to the influence of the structured dielectric environment on the Coulomb interaction, the exciton resonances and the quasiequilibrium carrier densities in the spatially homogeneous semiconductor become space dependent. It is demonstrated that these inhomogeneities lead to distinct modifications of the optical absorption and gain spectra. As an application, numerically calculated density-dependent optical spectra are analyzed for an array of semiconductor quantum wires which are close to a two-dimensional photonic crystal. The spatial inhomogeneities result in novel excitonic absorption features and modification of the optical gain in these structures.","lang":"eng"}],"date_created":"2021-08-24T09:19:26Z","type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"}]},{"_id":"23498","page":"S221-S244","volume":17,"user_id":"49063","status":"public","citation":{"short":"T. Meier, M. Reichelt, S.W. Koch, U. Höfer, Journal of Physics: Condensed Matter 17 (2005) S221–S244.","chicago":"Meier, Torsten, Matthias Reichelt, S W Koch, and U Höfer. “Femtosecond Time-Resolved Five-Wave Mixing at Silicon Surfaces.” <i>Journal of Physics: Condensed Matter</i> 17, no. 8 (2005): S221–44. <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">https://doi.org/10.1088/0953-8984/17/8/003</a>.","ieee":"T. Meier, M. Reichelt, S. W. Koch, and U. Höfer, “Femtosecond time-resolved five-wave mixing at silicon surfaces,” <i>Journal of Physics: Condensed Matter</i>, vol. 17, no. 8, pp. S221–S244, 2005, doi: <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>.","apa":"Meier, T., Reichelt, M., Koch, S. W., &#38; Höfer, U. (2005). Femtosecond time-resolved five-wave mixing at silicon surfaces. <i>Journal of Physics: Condensed Matter</i>, <i>17</i>(8), S221–S244. <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">https://doi.org/10.1088/0953-8984/17/8/003</a>","bibtex":"@article{Meier_Reichelt_Koch_Höfer_2005, title={Femtosecond time-resolved five-wave mixing at silicon surfaces}, volume={17}, DOI={<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>}, number={8}, journal={Journal of Physics: Condensed Matter}, author={Meier, Torsten and Reichelt, Matthias and Koch, S W and Höfer, U}, year={2005}, pages={S221–S244} }","ama":"Meier T, Reichelt M, Koch SW, Höfer U. Femtosecond time-resolved five-wave mixing at silicon surfaces. <i>Journal of Physics: Condensed Matter</i>. 2005;17(8):S221-S244. doi:<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>","mla":"Meier, Torsten, et al. “Femtosecond Time-Resolved Five-Wave Mixing at Silicon Surfaces.” <i>Journal of Physics: Condensed Matter</i>, vol. 17, no. 8, 2005, pp. S221–44, doi:<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>."},"language":[{"iso":"eng"}],"doi":"10.1088/0953-8984/17/8/003","author":[{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"first_name":"S W","last_name":"Koch","full_name":"Koch, S W"},{"full_name":"Höfer, U","first_name":"U","last_name":"Höfer"}],"publication_identifier":{"issn":["0953-8984","1361-648X"]},"year":"2005","title":"Femtosecond time-resolved five-wave mixing at silicon surfaces","intvolume":"        17","date_updated":"2023-04-24T06:14:12Z","publication_status":"published","date_created":"2021-08-24T09:20:43Z","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"}],"type":"journal_article","issue":"8","publication":"Journal of Physics: Condensed Matter","abstract":[{"lang":"eng","text":"The ultrafast dynamics of photoexcitations at silicon surfaces is investigated using a surface-sensitive purely optical technique. In the experiments, the diffracted second harmonic generated by sequences of ultrashort laser pulses is detected as a function of the time delay between the pulses. It is demonstrated that this five-wave-mixing technique can be used to measure the temporal evolution of the optical polarization and the photoexcited populations at the surface. The experimental results can be reproduced by numerical solutions of optical Bloch equations. The theoretical analysis allows one to investigate which dephasing times and relaxation processes are compatible with experiment. Furthermore, it is outlined how one can describe optical nonlinearities at surfaces using a microscopic theory within the framework of semiconductor Bloch equations."}],"extern":"1"},{"citation":{"ieee":"T. Meier, M. Reichelt, S. W. Koch, and U. Höfer, “Femtosecond time-resolved five-wave mixing at silicon surfaces,” <i>Journal of Physics: Condensed Matter</i>, vol. 17, no. 8, pp. S221–S244, 2005, doi: <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>.","apa":"Meier, T., Reichelt, M., Koch, S. W., &#38; Höfer, U. (2005). Femtosecond time-resolved five-wave mixing at silicon surfaces. <i>Journal of Physics: Condensed Matter</i>, <i>17</i>(8), S221–S244. <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">https://doi.org/10.1088/0953-8984/17/8/003</a>","chicago":"Meier, Torsten, Matthias Reichelt, S W Koch, and U Höfer. “Femtosecond Time-Resolved Five-Wave Mixing at Silicon Surfaces.” <i>Journal of Physics: Condensed Matter</i> 17, no. 8 (2005): S221–44. <a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">https://doi.org/10.1088/0953-8984/17/8/003</a>.","short":"T. Meier, M. Reichelt, S.W. Koch, U. Höfer, Journal of Physics: Condensed Matter 17 (2005) S221–S244.","mla":"Meier, Torsten, et al. “Femtosecond Time-Resolved Five-Wave Mixing at Silicon Surfaces.” <i>Journal of Physics: Condensed Matter</i>, vol. 17, no. 8, 2005, pp. S221–44, doi:<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>.","bibtex":"@article{Meier_Reichelt_Koch_Höfer_2005, title={Femtosecond time-resolved five-wave mixing at silicon surfaces}, volume={17}, DOI={<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>}, number={8}, journal={Journal of Physics: Condensed Matter}, author={Meier, Torsten and Reichelt, Matthias and Koch, S W and Höfer, U}, year={2005}, pages={S221–S244} }","ama":"Meier T, Reichelt M, Koch SW, Höfer U. Femtosecond time-resolved five-wave mixing at silicon surfaces. <i>Journal of Physics: Condensed Matter</i>. 2005;17(8):S221-S244. doi:<a href=\"https://doi.org/10.1088/0953-8984/17/8/003\">10.1088/0953-8984/17/8/003</a>"},"user_id":"49063","volume":17,"page":"S221-S244","_id":"23499","status":"public","type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"}],"date_created":"2021-08-24T09:21:43Z","extern":"1","abstract":[{"lang":"eng","text":"The ultrafast dynamics of photoexcitations at silicon surfaces is investigated using a surface-sensitive purely optical technique. In the experiments, the diffracted second harmonic generated by sequences of ultrashort laser pulses is detected as a function of the time delay between the pulses. It is demonstrated that this five-wave-mixing technique can be used to measure the temporal evolution of the optical polarization and the photoexcited populations at the surface. The experimental results can be reproduced by numerical solutions of optical Bloch equations. The theoretical analysis allows one to investigate which dephasing times and relaxation processes are compatible with experiment. Furthermore, it is outlined how one can describe optical nonlinearities at surfaces using a microscopic theory within the framework of semiconductor Bloch equations."}],"issue":"8","publication":"Journal of Physics: Condensed Matter","doi":"10.1088/0953-8984/17/8/003","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2023-04-24T06:14:11Z","intvolume":"        17","title":"Femtosecond time-resolved five-wave mixing at silicon surfaces","year":"2005","publication_identifier":{"issn":["0953-8984","1361-648X"]},"author":[{"id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten","full_name":"Meier, Torsten"},{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"first_name":"S W","last_name":"Koch","full_name":"Koch, S W"},{"first_name":"U","last_name":"Höfer","full_name":"Höfer, U"}]},{"main_file_link":[{"url":"https://www.dpg-verhandlungen.de/year/2005/conference/berlin/part/hl/session/37/contribution/2"}],"_id":"44297","series_title":"Verhandlungen der Deutschen Physikalischen Gesellschaft","language":[{"iso":"eng"}],"user_id":"49063","volume":40,"year":"2005","title":"Optical properties of semiconductor photonic-crystal structures: spatially-inhomogeneous excitonic resonances and optical gain","status":"public","conference":{"end_date":"2005-03-09","location":"Berlin, Germany","name":"2005 annual conference of the German Physical Society (DPG) during the World year of physics","start_date":"2005-03-04"},"author":[{"id":"344","full_name":"Meier, Torsten","first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier"},{"id":"138","full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias"},{"full_name":"Pasenow, B.","last_name":"Pasenow","first_name":"B."},{"full_name":"Stroucken, T.","last_name":"Stroucken","first_name":"T."},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."}],"date_updated":"2023-05-01T13:25:46Z","publication_status":"published","intvolume":"        40","date_created":"2023-05-01T13:25:43Z","type":"conference","department":[{"_id":"293"}],"publication":"2005 annual conference of the German Physical Society (DPG) during the World year of physics","citation":{"mla":"Meier, Torsten, et al. “Optical Properties of Semiconductor Photonic-Crystal Structures: Spatially-Inhomogeneous Excitonic Resonances and Optical Gain.” <i>2005 Annual Conference of the German Physical Society (DPG) during the World Year of Physics</i>, vol. 40, 2005.","ama":"Meier T, Reichelt M, Pasenow B, Stroucken T, Koch SW. Optical properties of semiconductor photonic-crystal structures: spatially-inhomogeneous excitonic resonances and optical gain. In: <i>2005 Annual Conference of the German Physical Society (DPG) during the World Year of Physics</i>. Vol 40. Verhandlungen der Deutschen Physikalischen Gesellschaft. ; 2005.","bibtex":"@inproceedings{Meier_Reichelt_Pasenow_Stroucken_Koch_2005, series={Verhandlungen der Deutschen Physikalischen Gesellschaft}, title={Optical properties of semiconductor photonic-crystal structures: spatially-inhomogeneous excitonic resonances and optical gain}, volume={40}, booktitle={2005 annual conference of the German Physical Society (DPG) during the World year of physics}, author={Meier, Torsten and Reichelt, Matthias and Pasenow, B. and Stroucken, T. and Koch, S.W.}, year={2005}, collection={Verhandlungen der Deutschen Physikalischen Gesellschaft} }","apa":"Meier, T., Reichelt, M., Pasenow, B., Stroucken, T., &#38; Koch, S. W. (2005). Optical properties of semiconductor photonic-crystal structures: spatially-inhomogeneous excitonic resonances and optical gain. <i>2005 Annual Conference of the German Physical Society (DPG) during the World Year of Physics</i>, <i>40</i>.","ieee":"T. Meier, M. Reichelt, B. Pasenow, T. Stroucken, and S. W. Koch, “Optical properties of semiconductor photonic-crystal structures: spatially-inhomogeneous excitonic resonances and optical gain,” in <i>2005 annual conference of the German Physical Society (DPG) during the World year of physics</i>, Berlin, Germany, 2005, vol. 40.","chicago":"Meier, Torsten, Matthias Reichelt, B. Pasenow, T. Stroucken, and S.W. Koch. “Optical Properties of Semiconductor Photonic-Crystal Structures: Spatially-Inhomogeneous Excitonic Resonances and Optical Gain.” In <i>2005 Annual Conference of the German Physical Society (DPG) during the World Year of Physics</i>, Vol. 40. Verhandlungen Der Deutschen Physikalischen Gesellschaft, 2005.","short":"T. Meier, M. Reichelt, B. Pasenow, T. Stroucken, S.W. Koch, in: 2005 Annual Conference of the German Physical Society (DPG) during the World Year of Physics, 2005."},"extern":"1"},{"extern":"1","issue":"23","publication":"Physical Review B","citation":{"short":"R. Oszwałdowski, M. Reichelt, T. Meier, S.W. Koch, M. Rohlfing, Physical Review B 71 (2005).","chicago":"Oszwałdowski, R., Matthias Reichelt, Torsten Meier, S. W. Koch, and Michael Rohlfing. “Nonlinear Optical Response of the  Si ( 111 ) − ( 2 × 1 )  Surface Exciton: Influence of Biexciton Many-Body Correlations.” <i>Physical Review B</i> 71, no. 23 (2005). <a href=\"https://doi.org/10.1103/physrevb.71.235324\">https://doi.org/10.1103/physrevb.71.235324</a>.","apa":"Oszwałdowski, R., Reichelt, M., Meier, T., Koch, S. W., &#38; Rohlfing, M. (2005). Nonlinear optical response of the  Si ( 111 ) − ( 2 × 1 )  surface exciton: Influence of biexciton many-body correlations. <i>Physical Review B</i>, <i>71</i>(23). <a href=\"https://doi.org/10.1103/physrevb.71.235324\">https://doi.org/10.1103/physrevb.71.235324</a>","ieee":"R. Oszwałdowski, M. Reichelt, T. Meier, S. W. Koch, and M. Rohlfing, “Nonlinear optical response of the  Si ( 111 ) − ( 2 × 1 )  surface exciton: Influence of biexciton many-body correlations,” <i>Physical Review B</i>, vol. 71, no. 23, 2005, doi: <a href=\"https://doi.org/10.1103/physrevb.71.235324\">10.1103/physrevb.71.235324</a>.","ama":"Oszwałdowski R, Reichelt M, Meier T, Koch SW, Rohlfing M. Nonlinear optical response of the  Si ( 111 ) − ( 2 × 1 )  surface exciton: Influence of biexciton many-body correlations. <i>Physical Review B</i>. 2005;71(23). doi:<a href=\"https://doi.org/10.1103/physrevb.71.235324\">10.1103/physrevb.71.235324</a>","bibtex":"@article{Oszwałdowski_Reichelt_Meier_Koch_Rohlfing_2005, title={Nonlinear optical response of the  Si ( 111 ) − ( 2 × 1 )  surface exciton: Influence of biexciton many-body correlations}, volume={71}, DOI={<a href=\"https://doi.org/10.1103/physrevb.71.235324\">10.1103/physrevb.71.235324</a>}, number={23}, journal={Physical Review B}, author={Oszwałdowski, R. and Reichelt, Matthias and Meier, Torsten and Koch, S. W. and Rohlfing, Michael}, year={2005} }","mla":"Oszwałdowski, R., et al. “Nonlinear Optical Response of the  Si ( 111 ) − ( 2 × 1 )  Surface Exciton: Influence of Biexciton Many-Body Correlations.” <i>Physical Review B</i>, vol. 71, no. 23, 2005, doi:<a href=\"https://doi.org/10.1103/physrevb.71.235324\">10.1103/physrevb.71.235324</a>."},"type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"}],"date_created":"2021-08-24T09:26:55Z","date_updated":"2025-12-16T11:34:03Z","publication_status":"published","intvolume":"        71","status":"public","title":"Nonlinear optical response of the  Si ( 111 ) − ( 2 × 1 )  surface exciton: Influence of biexciton many-body correlations","year":"2005","author":[{"full_name":"Oszwałdowski, R.","first_name":"R.","last_name":"Oszwałdowski"},{"last_name":"Reichelt","first_name":"Matthias","full_name":"Reichelt, Matthias","id":"138"},{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072"},{"first_name":"S. W.","last_name":"Koch","full_name":"Koch, S. W."},{"full_name":"Rohlfing, Michael","first_name":"Michael","last_name":"Rohlfing"}],"publication_identifier":{"issn":["1098-0121","1550-235X"]},"doi":"10.1103/physrevb.71.235324","user_id":"16199","volume":71,"_id":"23503","language":[{"iso":"eng"}]},{"title":"Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface","year":"2004","author":[{"full_name":"Voelkmann, C.","last_name":"Voelkmann","first_name":"C."},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"id":"344","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"last_name":"Koch","first_name":"S. W.","full_name":"Koch, S. W."},{"first_name":"U.","last_name":"Höfer","full_name":"Höfer, U."}],"publication_identifier":{"issn":["0031-9007","1079-7114"]},"date_updated":"2023-04-24T06:31:23Z","publication_status":"published","intvolume":"        92","article_number":"127405","language":[{"iso":"eng"}],"doi":"10.1103/physrevlett.92.127405","issue":"12","publication":"Physical Review Letters","abstract":[{"lang":"eng","text":"The optically induced electron dynamics at a Si(001) surface is studied using a five-wave-mixing setup which measures the diffracted second-harmonic intensity induced by three ultrashort (13 fs) laser pulses. Depending on the time ordering of the pulses, this technique is capable of monitoring the temporal evolution of photoexcited one- or two-photon coherences, or populations. For a particular pulse sequence, the experiments show a delayed rise and a decay of the diffracted signal intensity on time scales of 50 and 250 fs, respectively. This response can be described by optical Bloch equations by including rapid scattering of the photoexcited carriers in the D(down)band of Si(001)."}],"extern":"1","date_created":"2021-08-24T09:44:59Z","type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"}],"status":"public","_id":"23512","user_id":"49063","volume":92,"citation":{"apa":"Voelkmann, C., Reichelt, M., Meier, T., Koch, S. W., &#38; Höfer, U. (2004). Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface. <i>Physical Review Letters</i>, <i>92</i>(12), Article 127405. <a href=\"https://doi.org/10.1103/physrevlett.92.127405\">https://doi.org/10.1103/physrevlett.92.127405</a>","ieee":"C. Voelkmann, M. Reichelt, T. Meier, S. W. Koch, and U. Höfer, “Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface,” <i>Physical Review Letters</i>, vol. 92, no. 12, Art. no. 127405, 2004, doi: <a href=\"https://doi.org/10.1103/physrevlett.92.127405\">10.1103/physrevlett.92.127405</a>.","short":"C. Voelkmann, M. Reichelt, T. Meier, S.W. Koch, U. Höfer, Physical Review Letters 92 (2004).","chicago":"Voelkmann, C., Matthias Reichelt, Torsten Meier, S. W. Koch, and U. Höfer. “Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface.” <i>Physical Review Letters</i> 92, no. 12 (2004). <a href=\"https://doi.org/10.1103/physrevlett.92.127405\">https://doi.org/10.1103/physrevlett.92.127405</a>.","mla":"Voelkmann, C., et al. “Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface.” <i>Physical Review Letters</i>, vol. 92, no. 12, 127405, 2004, doi:<a href=\"https://doi.org/10.1103/physrevlett.92.127405\">10.1103/physrevlett.92.127405</a>.","ama":"Voelkmann C, Reichelt M, Meier T, Koch SW, Höfer U. Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface. <i>Physical Review Letters</i>. 2004;92(12). doi:<a href=\"https://doi.org/10.1103/physrevlett.92.127405\">10.1103/physrevlett.92.127405</a>","bibtex":"@article{Voelkmann_Reichelt_Meier_Koch_Höfer_2004, title={Five-Wave-Mixing Spectroscopy of Ultrafast Electron Dynamics at a Si(001) Surface}, volume={92}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.92.127405\">10.1103/physrevlett.92.127405</a>}, number={12127405}, journal={Physical Review Letters}, author={Voelkmann, C. and Reichelt, Matthias and Meier, Torsten and Koch, S. W. and Höfer, U.}, year={2004} }"}},{"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.68.045330"}],"article_number":"045330","language":[{"iso":"eng"}],"doi":"10.1103/PhysRevB.68.045330","year":"2003","title":"Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton","author":[{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072"},{"id":"138","first_name":"Matthias","last_name":"Reichelt","full_name":"Reichelt, Matthias"},{"full_name":"Koch, S.W.","first_name":"S.W.","last_name":"Koch"},{"first_name":"M.","last_name":"Rohlfing","full_name":"Rohlfing, M."}],"date_updated":"2023-04-02T13:07:52Z","publication_status":"published","intvolume":"        68","date_created":"2023-04-02T13:07:49Z","type":"journal_article","department":[{"_id":"293"}],"publication":"Physical Review B","issue":"4","abstract":[{"lang":"eng","text":"A microscopic approach is presented to compute nonlinear optical properties of semiconductor surfaces. The method uses quasiparticle wave functions and dispersions obtained from ab initio band-structure theory as an input for Bloch equations which describe the optical properties. Excitonic effects in the linear absorption spectra of the Si(111)-\r\n(2×1) surface are obtained by integrating equations of motion. To demonstrate the applicability of the approach for analyzing nonlinear optical properties, ultrafast light-intensity-dependent absorption changes of the surface exciton are predicted. The numerical results discuss the optical Stark effect and spectral oscillations of the surface exciton which can both be observed in pump-probe experiments."}],"extern":"1","publisher":"American Physical Society","_id":"43289","user_id":"49063","volume":68,"status":"public","citation":{"ama":"Meier T, Reichelt M, Koch SW, Rohlfing M. Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton. <i>Physical Review B</i>. 2003;68(4). doi:<a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">10.1103/PhysRevB.68.045330</a>","bibtex":"@article{Meier_Reichelt_Koch_Rohlfing_2003, title={Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton}, volume={68}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">10.1103/PhysRevB.68.045330</a>}, number={4045330}, journal={Physical Review B}, publisher={American Physical Society}, author={Meier, Torsten and Reichelt, Matthias and Koch, S.W. and Rohlfing, M.}, year={2003} }","mla":"Meier, Torsten, et al. “Theory for the Nonlinear Optical Response of Semiconductor Surfaces: Application to the Optical Stark Effect and Spectral Oscillations of the Si(111)-(2x1) Surface Exciton.” <i>Physical Review B</i>, vol. 68, no. 4, 045330, American Physical Society, 2003, doi:<a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">10.1103/PhysRevB.68.045330</a>.","short":"T. Meier, M. Reichelt, S.W. Koch, M. Rohlfing, Physical Review B 68 (2003).","chicago":"Meier, Torsten, Matthias Reichelt, S.W. Koch, and M. Rohlfing. “Theory for the Nonlinear Optical Response of Semiconductor Surfaces: Application to the Optical Stark Effect and Spectral Oscillations of the Si(111)-(2x1) Surface Exciton.” <i>Physical Review B</i> 68, no. 4 (2003). <a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">https://doi.org/10.1103/PhysRevB.68.045330</a>.","apa":"Meier, T., Reichelt, M., Koch, S. W., &#38; Rohlfing, M. (2003). Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton. <i>Physical Review B</i>, <i>68</i>(4), Article 045330. <a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">https://doi.org/10.1103/PhysRevB.68.045330</a>","ieee":"T. Meier, M. Reichelt, S. W. Koch, and M. Rohlfing, “Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton,” <i>Physical Review B</i>, vol. 68, no. 4, Art. no. 045330, 2003, doi: <a href=\"https://doi.org/10.1103/PhysRevB.68.045330\">10.1103/PhysRevB.68.045330</a>."}},{"status":"public","_id":"43287","publisher":"WILEY‐VCH Verlag","page":"525-528","volume":238,"user_id":"49063","citation":{"short":"T. Meier, M. Reichelt, S.W. Koch, M. Rohlfing, Physica Status Solidi (b) 238 (2003) 525–528.","chicago":"Meier, Torsten, Matthias Reichelt, S.W. Koch, and M. Rohlfing. “Microscopic Theory for the Nonlinear Optical Response of Semiconductor Surfaces: Application to the Optical Stark Effect of the Si(111)-(2x1) Surface Exciton.” <i>Physica Status Solidi (b)</i> 238, no. 3 (2003): 525–28. <a href=\"https://doi.org/10.1002/pssb.200303180\">https://doi.org/10.1002/pssb.200303180</a>.","apa":"Meier, T., Reichelt, M., Koch, S. W., &#38; Rohlfing, M. (2003). Microscopic theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect of the Si(111)-(2x1) surface exciton. <i>Physica Status Solidi (b)</i>, <i>238</i>(3), 525–528. <a href=\"https://doi.org/10.1002/pssb.200303180\">https://doi.org/10.1002/pssb.200303180</a>","ieee":"T. Meier, M. Reichelt, S. W. Koch, and M. Rohlfing, “Microscopic theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect of the Si(111)-(2x1) surface exciton,” <i>physica status solidi (b)</i>, vol. 238, no. 3, pp. 525–528, 2003, doi: <a href=\"https://doi.org/10.1002/pssb.200303180\">10.1002/pssb.200303180</a>.","ama":"Meier T, Reichelt M, Koch SW, Rohlfing M. Microscopic theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect of the Si(111)-(2x1) surface exciton. <i>physica status solidi (b)</i>. 2003;238(3):525-528. doi:<a href=\"https://doi.org/10.1002/pssb.200303180\">10.1002/pssb.200303180</a>","bibtex":"@article{Meier_Reichelt_Koch_Rohlfing_2003, title={Microscopic theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect of the Si(111)-(2x1) surface exciton}, volume={238}, DOI={<a href=\"https://doi.org/10.1002/pssb.200303180\">10.1002/pssb.200303180</a>}, number={3}, journal={physica status solidi (b)}, publisher={WILEY‐VCH Verlag}, author={Meier, Torsten and Reichelt, Matthias and Koch, S.W. and Rohlfing, M.}, year={2003}, pages={525–528} }","mla":"Meier, Torsten, et al. “Microscopic Theory for the Nonlinear Optical Response of Semiconductor Surfaces: Application to the Optical Stark Effect of the Si(111)-(2x1) Surface Exciton.” <i>Physica Status Solidi (b)</i>, vol. 238, no. 3, WILEY‐VCH Verlag, 2003, pp. 525–28, doi:<a href=\"https://doi.org/10.1002/pssb.200303180\">10.1002/pssb.200303180</a>."},"author":[{"id":"344","full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072"},{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."},{"full_name":"Rohlfing, M.","last_name":"Rohlfing","first_name":"M."}],"title":"Microscopic theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect of the Si(111)-(2x1) surface exciton","year":"2003","intvolume":"       238","publication_status":"published","date_updated":"2023-04-02T12:59:02Z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/pssb.200303180"}],"doi":"10.1002/pssb.200303180","publication":"physica status solidi (b)","issue":"3","extern":"1","abstract":[{"text":"A novel microscopic approach for computing nonlinear optical properties of semiconductor surfaces is outlined. The linear and nonlinear response of the Si(111)-(2×1) surface is studied using a combination of ab-initio band-structure theory and equation of motion technique. The usefulness of the method is shown by reproducing known excitonic effects in the linear differential reflectivity spectrum. To additionally demonstrate the applicability of the approach for the nonlinear regime, the nonlinear optical response in Stark effect configuration is examined.","lang":"eng"}],"date_created":"2023-04-02T12:58:59Z","department":[{"_id":"293"}],"type":"journal_article"},{"citation":{"ieee":"T. Meier, H. P. Wagner, H.-P. Tranitz, M. Reichelt, and S. W. Koch, “Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations,” <i>physica status solidi (a)</i>, vol. 190, no. 3, pp. 843–847, 2002, doi: <a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>.","apa":"Meier, T., Wagner, H. P., Tranitz, H.-P., Reichelt, M., &#38; Koch, S. W. (2002). Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations. <i>Physica Status Solidi (a)</i>, <i>190</i>(3), 843–847. <a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>","short":"T. Meier, H.P. Wagner, H.-P. Tranitz, M. Reichelt, S.W. Koch, Physica Status Solidi (a) 190 (2002) 843–847.","chicago":"Meier, Torsten, H.P. Wagner, H.-P. Tranitz, Matthias Reichelt, and S.W. Koch. “Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations.” <i>Physica Status Solidi (a)</i> 190, no. 3 (2002): 843–47. <a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>.","mla":"Meier, Torsten, et al. “Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations.” <i>Physica Status Solidi (a)</i>, vol. 190, no. 3, WILEY‐VCH Verlag Berlin GmbH, 2002, pp. 843–47, doi:<a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>.","bibtex":"@article{Meier_Wagner_Tranitz_Reichelt_Koch_2002, title={Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations}, volume={190}, DOI={<a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>}, number={3}, journal={physica status solidi (a)}, publisher={WILEY‐VCH Verlag Berlin GmbH}, author={Meier, Torsten and Wagner, H.P. and Tranitz, H.-P. and Reichelt, Matthias and Koch, S.W.}, year={2002}, pages={843–847} }","ama":"Meier T, Wagner HP, Tranitz H-P, Reichelt M, Koch SW. Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations. <i>physica status solidi (a)</i>. 2002;190(3):843-847. doi:<a href=\"https://doi.org/10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B\">10.1002/1521-396X(200204)190:3&#60;843::AID-PSSA843&#62;3.0.CO;2-B</a>"},"status":"public","volume":190,"user_id":"49063","publisher":"WILEY‐VCH Verlag Berlin GmbH","_id":"43296","page":"843-847","extern":"1","abstract":[{"text":"A three-beam configuration is used to investigate the spectrally resolved wave-mixing signal of a ZnSe single quantum well. The spectrum recorded in direction 2 k2–k1 shows coherent oscillations induced by a delayed third pulse with direction k3. Intensity and polarization-dependent measurements indicate that the signal is generated by a combination of four- and six-wave mixing. The origin of the oscillations can be explained qualitatively by a two-level model. The polarization-dependent experimental results require the treatment of many-body correlations and are well explained by microscopic calculations including four-particle correlations up to fifth order in the fields.","lang":"eng"}],"publication":"physica status solidi (a)","issue":"3","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-02T13:28:56Z","intvolume":"       190","publication_status":"published","date_updated":"2023-04-02T13:28:58Z","author":[{"first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344"},{"first_name":"H.P.","last_name":"Wagner","full_name":"Wagner, H.P."},{"full_name":"Tranitz, H.-P.","first_name":"H.-P.","last_name":"Tranitz"},{"id":"138","first_name":"Matthias","last_name":"Reichelt","full_name":"Reichelt, Matthias"},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."}],"title":"Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations","year":"2002","doi":"10.1002/1521-396X(200204)190:3<843::AID-PSSA843>3.0.CO;2-B","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/1521-396X(200204)190:3%3C843::AID-PSSA843%3E3.0.CO;2-B"}]},{"oa":"1","place":"Jülich","citation":{"mla":"Meier, Torsten, et al. “Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures.” <i>Germany NIC Series Vol. 9</i>, edited by Horst Rollnik and Dietrich Wolf, John von Neumann Institute for Computing, 2002, pp. 315–24.","ama":"Meier T, Reichelt M, Schlichenmaier C, et al. Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures. In: Rollnik H, Wolf D, eds. <i>Germany NIC Series Vol. 9</i>. NIC Symposium 2001: Symposium 5.-6. December 2001, Forschungszentrum Jülich: Proceedings. John von Neumann Institute for Computing; 2002:315-324.","bibtex":"@inbook{Meier_Reichelt_Schlichenmaier_Siggelkow_Thomas_Koch_Weiser_Sieh_2002, place={Jülich}, series={NIC Symposium 2001: Symposium 5.-6. December 2001, Forschungszentrum Jülich: Proceedings}, title={Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures}, booktitle={Germany NIC Series Vol. 9}, publisher={John von Neumann Institute for Computing}, author={Meier, Torsten and Reichelt, Matthias and Schlichenmaier, C. and Siggelkow, S. and Thomas, P. and Koch, S.W. and Weiser, S. and Sieh, C.}, editor={Rollnik, Horst and Wolf, Dietrich}, year={2002}, pages={315–324}, collection={NIC Symposium 2001: Symposium 5.-6. December 2001, Forschungszentrum Jülich: Proceedings} }","apa":"Meier, T., Reichelt, M., Schlichenmaier, C., Siggelkow, S., Thomas, P., Koch, S. W., Weiser, S., &#38; Sieh, C. (2002). Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures. In H. Rollnik &#38; D. Wolf (Eds.), <i>Germany NIC Series Vol. 9</i> (pp. 315–324). John von Neumann Institute for Computing.","ieee":"T. Meier <i>et al.</i>, “Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures,” in <i>Germany NIC Series Vol. 9</i>, H. Rollnik and D. Wolf, Eds. Jülich: John von Neumann Institute for Computing, 2002, pp. 315–324.","chicago":"Meier, Torsten, Matthias Reichelt, C. Schlichenmaier, S. Siggelkow, P. Thomas, S.W. Koch, S. Weiser, and C. Sieh. “Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures.” In <i>Germany NIC Series Vol. 9</i>, edited by Horst Rollnik and Dietrich Wolf, 315–24. NIC Symposium 2001: Symposium 5.-6. December 2001, Forschungszentrum Jülich: Proceedings. Jülich: John von Neumann Institute for Computing, 2002.","short":"T. Meier, M. Reichelt, C. Schlichenmaier, S. Siggelkow, P. Thomas, S.W. Koch, S. Weiser, C. Sieh, in: H. Rollnik, D. Wolf (Eds.), Germany NIC Series Vol. 9, John von Neumann Institute for Computing, Jülich, 2002, pp. 315–324."},"editor":[{"full_name":"Rollnik, Horst","last_name":"Rollnik","first_name":"Horst"},{"first_name":"Dietrich","last_name":"Wolf","full_name":"Wolf, Dietrich"}],"user_id":"49063","_id":"43298","publisher":"John von Neumann Institute for Computing","page":" 315-324","status":"public","department":[{"_id":"293"}],"type":"book_chapter","date_created":"2023-04-02T13:41:13Z","extern":"1","publication":"Germany NIC Series Vol. 9","language":[{"iso":"eng"}],"series_title":"NIC Symposium 2001: Symposium 5.-6. December 2001, Forschungszentrum Jülich: Proceedings","main_file_link":[{"url":"https://core.ac.uk/download/pdf/35009919.pdf","open_access":"1"}],"publication_status":"published","date_updated":"2023-04-02T13:45:18Z","author":[{"orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","full_name":"Meier, Torsten","id":"344"},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"last_name":"Schlichenmaier","first_name":"C.","full_name":"Schlichenmaier, C."},{"full_name":"Siggelkow, S.","first_name":"S.","last_name":"Siggelkow"},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."},{"full_name":"Weiser, S.","last_name":"Weiser","first_name":"S."},{"full_name":"Sieh, C.","first_name":"C.","last_name":"Sieh"}],"publication_identifier":{"isbn":["3-00-009055-X"]},"year":"2002","title":"Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures"},{"date_created":"2023-04-02T14:35:58Z","department":[{"_id":"293"}],"type":"journal_article","publication":"Physical Review B","issue":"23","abstract":[{"lang":"eng","text":"The nonlinear optical response of a ZnSe single quantum well is investigated by spectrally resolving a wave-mixing signal using a three-beam configuration. A delayed third pulse with direction k3 leads to coherent oscillations in the spectrum emitted in 2k2–k1. Polarization-dependent measurements highlight the importance of higher-order Coulomb correlations as the dominant coupling mechanism between the three pulses. The experimental results are well explained by microscopic calculations including four-particle correlations up to fifth order in the fields."}],"extern":"1","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.64.233303"}],"article_number":"233303","doi":"10.1103/PhysRevB.64.233303","author":[{"full_name":"Meier, Torsten","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Wagner, H.P.","last_name":"Wagner","first_name":"H.P."},{"full_name":"Tranitz, H.-P.","last_name":"Tranitz","first_name":"H.-P."},{"full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt","id":"138"},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."}],"title":"Coherent spectral oscillations in multiwave mixing","year":"2001","intvolume":"        64","date_updated":"2023-04-24T07:02:36Z","publication_status":"published","citation":{"short":"T. Meier, H.P. Wagner, H.-P. Tranitz, M. Reichelt, S.W. Koch, Physical Review B 64 (2001).","chicago":"Meier, Torsten, H.P. Wagner, H.-P. Tranitz, Matthias Reichelt, and S.W. Koch. “Coherent Spectral Oscillations in Multiwave Mixing.” <i>Physical Review B</i> 64, no. 23 (2001). <a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">https://doi.org/10.1103/PhysRevB.64.233303</a>.","ieee":"T. Meier, H. P. Wagner, H.-P. Tranitz, M. Reichelt, and S. W. Koch, “Coherent spectral oscillations in multiwave mixing,” <i>Physical Review B</i>, vol. 64, no. 23, Art. no. 233303, 2001, doi: <a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">10.1103/PhysRevB.64.233303</a>.","apa":"Meier, T., Wagner, H. P., Tranitz, H.-P., Reichelt, M., &#38; Koch, S. W. (2001). Coherent spectral oscillations in multiwave mixing. <i>Physical Review B</i>, <i>64</i>(23), Article 233303. <a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">https://doi.org/10.1103/PhysRevB.64.233303</a>","bibtex":"@article{Meier_Wagner_Tranitz_Reichelt_Koch_2001, title={Coherent spectral oscillations in multiwave mixing}, volume={64}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">10.1103/PhysRevB.64.233303</a>}, number={23233303}, journal={Physical Review B}, publisher={American Physical Society}, author={Meier, Torsten and Wagner, H.P. and Tranitz, H.-P. and Reichelt, Matthias and Koch, S.W.}, year={2001} }","ama":"Meier T, Wagner HP, Tranitz H-P, Reichelt M, Koch SW. Coherent spectral oscillations in multiwave mixing. <i>Physical Review B</i>. 2001;64(23). doi:<a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">10.1103/PhysRevB.64.233303</a>","mla":"Meier, Torsten, et al. “Coherent Spectral Oscillations in Multiwave Mixing.” <i>Physical Review B</i>, vol. 64, no. 23, 233303, American Physical Society, 2001, doi:<a href=\"https://doi.org/10.1103/PhysRevB.64.233303\">10.1103/PhysRevB.64.233303</a>."},"_id":"43309","publisher":"American Physical Society","volume":64,"user_id":"49063","status":"public"},{"citation":{"apa":"Meier, T., Reichelt, M., Sieh, C., &#38; Koch, S. W. (2000). Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory. <i>Physica Status Solidi (b)</i>, <i>221</i>(1), 249–252. <a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>","ieee":"T. Meier, M. Reichelt, C. Sieh, and S. W. Koch, “Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory,” <i>physica status solidi (b)</i>, vol. 221, no. 1, pp. 249–252, 2000, doi: <a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>.","short":"T. Meier, M. Reichelt, C. Sieh, S.W. Koch, Physica Status Solidi (b) 221 (2000) 249–252.","chicago":"Meier, Torsten, Matthias Reichelt, C. Sieh, and S.W. Koch. “Comparison of the Differential Absorption Obtained within a Few-Level Model and the Microscopic Density-Matrix Theory.” <i>Physica Status Solidi (b)</i> 221, no. 1 (2000): 249–52. <a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>.","mla":"Meier, Torsten, et al. “Comparison of the Differential Absorption Obtained within a Few-Level Model and the Microscopic Density-Matrix Theory.” <i>Physica Status Solidi (b)</i>, vol. 221, no. 1, WILEY‐VCH Verlag Berlin GmbH, 2000, pp. 249–52, doi:<a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>.","ama":"Meier T, Reichelt M, Sieh C, Koch SW. Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory. <i>physica status solidi (b)</i>. 2000;221(1):249-252. doi:<a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>","bibtex":"@article{Meier_Reichelt_Sieh_Koch_2000, title={Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory}, volume={221}, DOI={<a href=\"https://doi.org/10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E\">10.1002/1521-3951(200009)221:1&#60;249::AID-PSSB249&#62;3.0.CO;2-E</a>}, number={1}, journal={physica status solidi (b)}, publisher={WILEY‐VCH Verlag Berlin GmbH}, author={Meier, Torsten and Reichelt, Matthias and Sieh, C. and Koch, S.W.}, year={2000}, pages={249–252} }"},"publisher":"WILEY‐VCH Verlag Berlin GmbH","_id":"43319","page":"249-252","volume":221,"user_id":"49063","status":"public","date_created":"2023-04-02T17:22:31Z","department":[{"_id":"293"}],"type":"journal_article","issue":"1","publication":"physica status solidi (b)","extern":"1","abstract":[{"lang":"eng","text":"A phenomenological multi-exciton level scheme is used to calculate the excitonic differential absorption as measured in pump and probe experiments. Numerical results are compared to those obtained by a fully microscopic density-matrix theory. For resonant excitation, optimized parameters yield qualitative agreement, but the phenomenological approach soon reaches its limit for non-resonant pumping."}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/1521-3951(200009)221:1%3C249::AID-PSSB249%3E3.0.CO;2-E"}],"doi":"10.1002/1521-3951(200009)221:1<249::AID-PSSB249>3.0.CO;2-E","author":[{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072"},{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"full_name":"Sieh, C.","first_name":"C.","last_name":"Sieh"},{"full_name":"Koch, S.W.","last_name":"Koch","first_name":"S.W."}],"title":"Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory","year":"2000","intvolume":"       221","publication_status":"published","date_updated":"2023-05-01T13:31:18Z"}]