[{"extern":"1","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."}],"publication":"Physical Review B","issue":"4","department":[{"_id":"293"}],"type":"journal_article","date_created":"2023-04-02T13:07:49Z","intvolume":"        68","publication_status":"published","date_updated":"2023-04-02T13:07:52Z","author":[{"id":"344","first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten"},{"full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias","id":"138"},{"full_name":"Koch, S.W.","last_name":"Koch","first_name":"S.W."},{"first_name":"M.","last_name":"Rohlfing","full_name":"Rohlfing, M."}],"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","year":"2003","doi":"10.1103/PhysRevB.68.045330","language":[{"iso":"eng"}],"article_number":"045330","main_file_link":[{"url":"https://journals.aps.org/prb/abstract/10.1103/PhysRevB.68.045330"}],"citation":{"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>.","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} }","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>.","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>.","short":"T. Meier, M. Reichelt, S.W. Koch, M. Rohlfing, Physical Review B 68 (2003)."},"status":"public","volume":68,"user_id":"49063","publisher":"American Physical Society","_id":"43289"},{"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","author":[{"orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","full_name":"Meier, Torsten","id":"344"},{"last_name":"Reichelt","first_name":"Matthias","full_name":"Reichelt, Matthias","id":"138"},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."},{"last_name":"Rohlfing","first_name":"M.","full_name":"Rohlfing, M."}],"date_updated":"2023-04-02T12:59:02Z","publication_status":"published","intvolume":"       238","main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/pssb.200303180"}],"language":[{"iso":"eng"}],"doi":"10.1002/pssb.200303180","issue":"3","publication":"physica status solidi (b)","abstract":[{"lang":"eng","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."}],"extern":"1","date_created":"2023-04-02T12:58:59Z","type":"journal_article","department":[{"_id":"293"}],"status":"public","page":"525-528","publisher":"WILEY‐VCH Verlag","_id":"43287","user_id":"49063","volume":238,"citation":{"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>.","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>","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>.","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>.","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} }","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>"}},{"citation":{"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>.","short":"T. Meier, H.P. Wagner, H.-P. Tranitz, M. Reichelt, S.W. Koch, Physica Status Solidi (a) 190 (2002) 843–847.","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>","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>","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>."},"status":"public","volume":190,"user_id":"49063","publisher":"WILEY‐VCH Verlag Berlin GmbH","_id":"43296","page":"843-847","extern":"1","abstract":[{"lang":"eng","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."}],"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":[{"last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344"},{"first_name":"H.P.","last_name":"Wagner","full_name":"Wagner, H.P."},{"last_name":"Tranitz","first_name":"H.-P.","full_name":"Tranitz, H.-P."},{"first_name":"Matthias","last_name":"Reichelt","full_name":"Reichelt, Matthias","id":"138"},{"full_name":"Koch, S.W.","first_name":"S.W.","last_name":"Koch"}],"year":"2002","title":"Coherent Oscillations in Multiwave Mixing Due to Higher‐Order Coulomb Correlations","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"}]},{"date_created":"2023-04-02T13:41:13Z","department":[{"_id":"293"}],"type":"book_chapter","publication":"Germany NIC Series Vol. 9","extern":"1","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_identifier":{"isbn":["3-00-009055-X"]},"author":[{"full_name":"Meier, Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","id":"344"},{"id":"138","first_name":"Matthias","last_name":"Reichelt","full_name":"Reichelt, Matthias"},{"last_name":"Schlichenmaier","first_name":"C.","full_name":"Schlichenmaier, C."},{"full_name":"Siggelkow, S.","last_name":"Siggelkow","first_name":"S."},{"last_name":"Thomas","first_name":"P.","full_name":"Thomas, P."},{"first_name":"S.W.","last_name":"Koch","full_name":"Koch, S.W."},{"full_name":"Weiser, S.","first_name":"S.","last_name":"Weiser"},{"full_name":"Sieh, C.","first_name":"C.","last_name":"Sieh"}],"year":"2002","title":"Many-Body Correlation Effects in Photoexcited Semiconductor Heterostructures","date_updated":"2023-04-02T13:45:18Z","publication_status":"published","place":"Jülich","oa":"1","citation":{"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.","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.","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.","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.","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.","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} }","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."},"publisher":"John von Neumann Institute for Computing","_id":"43298","page":" 315-324","editor":[{"first_name":"Horst","last_name":"Rollnik","full_name":"Rollnik, Horst"},{"full_name":"Wolf, Dietrich","last_name":"Wolf","first_name":"Dietrich"}],"user_id":"49063","status":"public"},{"author":[{"id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten","full_name":"Meier, Torsten"},{"full_name":"Wagner, H.P.","last_name":"Wagner","first_name":"H.P."},{"full_name":"Tranitz, H.-P.","last_name":"Tranitz","first_name":"H.-P."},{"id":"138","first_name":"Matthias","last_name":"Reichelt","full_name":"Reichelt, Matthias"},{"last_name":"Koch","first_name":"S.W.","full_name":"Koch, S.W."}],"year":"2001","title":"Coherent spectral oscillations in multiwave mixing","intvolume":"        64","date_updated":"2023-04-24T07:02:36Z","publication_status":"published","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","issue":"23","publication":"Physical Review B","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","date_created":"2023-04-02T14:35:58Z","department":[{"_id":"293"}],"type":"journal_article","status":"public","publisher":"American Physical Society","_id":"43309","volume":64,"user_id":"49063","citation":{"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>","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>.","short":"T. Meier, H.P. Wagner, H.-P. Tranitz, M. Reichelt, S.W. Koch, Physical Review B 64 (2001).","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>.","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>"}},{"user_id":"49063","volume":221,"page":"249-252","_id":"43319","publisher":"WILEY‐VCH Verlag Berlin GmbH","status":"public","citation":{"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>.","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>","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>.","short":"T. Meier, M. Reichelt, C. Sieh, S.W. Koch, Physica Status Solidi (b) 221 (2000) 249–252.","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>.","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} }","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>"},"doi":"10.1002/1521-3951(200009)221:1<249::AID-PSSB249>3.0.CO;2-E","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"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2023-05-01T13:31:18Z","intvolume":"       221","title":"Comparison of the differential absorption obtained within a few-level model and the microscopic density-matrix theory","year":"2000","author":[{"first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344"},{"id":"138","full_name":"Reichelt, Matthias","first_name":"Matthias","last_name":"Reichelt"},{"full_name":"Sieh, C.","first_name":"C.","last_name":"Sieh"},{"full_name":"Koch, S.W.","first_name":"S.W.","last_name":"Koch"}],"type":"journal_article","department":[{"_id":"293"}],"date_created":"2023-04-02T17:22:31Z","extern":"1","abstract":[{"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.","lang":"eng"}],"issue":"1","publication":"physica status solidi (b)"}]