Resonant generation of terahertz optical sidebands from confined magnetoexcitons
| Autor: | Hiroyuki Sakaki, S. J. Allen, Takeshi Noda, M. Y. Su, Takeshi Inoshita, Mark S. Sherwin, Junichiro Kono, John Cerne |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Nuclear and High Energy Physics Field (physics) Condensed matter physics Condensed Matter::Other Terahertz radiation Exciton Physics::Optics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Intensity (physics) Condensed Matter::Materials Science Nonlinear system Electric field Emission spectrum Atomic physics Instrumentation Quantum well |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 144:115-122 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/s0168-583x(98)00301-2 |
| Popis: | We have probed the internal structure and nonlinear response of magnetoexcitons in GaAs/AlGaAs quantum wells by resonantly driving one- and two-photon internal transitions with intense terahertz electric fields. Strong near-bandgap emission lines, or optical sidebands, appear at frequencies ω NIR ± 2 nω THz , where ω NIR is the interband exciton-creation frequency, ω THz is the frequency of the driving field, and n is an integer. The intensity of the sidebands exhibits pronounced enhancement when ω THz coincides with transitions between magnetically tuned energy levels in the excitons, providing new and accurate information on the internal dynamics of excitons. |
| Databáze: | OpenAIRE |
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