Terahertz-induced optical modulations in quantum-well microcavity

Yun Shik Lee, J. L. Tomaino, A. D. Jameson, Galina Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, Stephan W Koch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strong exciton-photon coupling in a high-Q microcavity leads to the formation of two new eigenstates, called excitonpolaritons. We present the quantum dynamics of exciton-polaritons driven by strong few-cycle THz pulses. Our study focuses on an intriguing question of how THz radiation interacts with the strongly coupled light-matter system. We performed THz-pump and optical-probe experiments to answer the question: we observed the time-resolved optical reflectivity of the lower and higher exciton-polariton (LEP and HEP) modes in a QW microcavity in the presence of strong few-cycle THz pulses. In a previous study with a bare QW, a strong THz field tuned to the 1s-to-2p intraexciton transition induced an excitonic Rabi splitting. Since THz radiation interacts only with the excitonic components of exciton-polaritons and has no impact on cavity modes, it is an interesting question how THz radiation drives the excitonpolariton states to higher energy states in the microcavity system. Our study shows that THz radiation resonantly drives the exciton-polariton polarizations giving rise to LEP-to-2p or HEP-to-2p transitions. LEP-to-HEP transition is forbidden because they have the same symmetry. Our experimental and theoretical investigations demonstrate that LEP, HEP, and 2p-exciton states form a three-level Λ system in an optically excited QW microcavity.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8240
DOIs
StatePublished - 2012
EventNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI - San Francisco, CA, United States
Duration: Jan 24 2012Jan 26 2012

Other

OtherNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI
CountryUnited States
CitySan Francisco, CA
Period1/24/121/26/12

Fingerprint

Microcavity
Microcavities
Light modulation
light modulation
Quantum Well
Excitons
Semiconductor quantum wells
Exciton
Modulation
excitons
quantum wells
polaritons
Radiation
radiation
cycles
forbidden transitions
pulses
Cycle
Electron energy levels
LDS 751

Keywords

  • Few-cycle terahertz pulse
  • Nonlinear terahertz spectroscopy
  • Quantum-well microcavity

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Lee, Y. S., Tomaino, J. L., Jameson, A. D., Khitrova, G., Gibbs, H. M., Klettke, A. C., ... Koch, S. W. (2012). Terahertz-induced optical modulations in quantum-well microcavity. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8240). [824008] https://doi.org/10.1117/12.905528

Terahertz-induced optical modulations in quantum-well microcavity. / Lee, Yun Shik; Tomaino, J. L.; Jameson, A. D.; Khitrova, Galina; Gibbs, H. M.; Klettke, A. C.; Kira, M.; Koch, Stephan W.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8240 2012. 824008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lee, YS, Tomaino, JL, Jameson, AD, Khitrova, G, Gibbs, HM, Klettke, AC, Kira, M & Koch, SW 2012, Terahertz-induced optical modulations in quantum-well microcavity. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8240, 824008, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, San Francisco, CA, United States, 1/24/12. https://doi.org/10.1117/12.905528
Lee YS, Tomaino JL, Jameson AD, Khitrova G, Gibbs HM, Klettke AC et al. Terahertz-induced optical modulations in quantum-well microcavity. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8240. 2012. 824008 https://doi.org/10.1117/12.905528
Lee, Yun Shik ; Tomaino, J. L. ; Jameson, A. D. ; Khitrova, Galina ; Gibbs, H. M. ; Klettke, A. C. ; Kira, M. ; Koch, Stephan W. / Terahertz-induced optical modulations in quantum-well microcavity. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8240 2012.
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