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20 August 2020 Time resolved spectroscopy of THz intersubband polaritons at small k vector
Jacques Hawecker, Pierre-Baptiste Vigneron, Jean-Michel Manceau, Juliette Mangeney, Jérome Tignon, Mohammed Salih, Hanshuo Wu, Lianhe Li, Edmund Linfield, Giles Davies, Raffaele Colombelli, Sukhdeep Dhillon
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Proceedings Volume 11499, Terahertz Emitters, Receivers, and Applications XI; 114990Q (2020) https://doi.org/10.1117/12.2568760
Event: SPIE Optical Engineering + Applications, 2020, Online Only
Abstract
Strong light-matter coupling in the terahertz (THz) region has strong potential for a new generation of THz devices based on polariton devices. In this work we investigate intersubband polaritons by time domain spectroscopy and characterize the coupled light-matter states at low k-vector for potential THz laser structures. A range of THz devices are studied to control the light-matter interaction and compared with the simulated polariton dispersion. The potential and investigations of THz stimulated emission via optical pumping at the so called “magic angle” for conservation of momentum and energy are presented.
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Jacques Hawecker, Pierre-Baptiste Vigneron, Jean-Michel Manceau, Juliette Mangeney, Jérome Tignon, Mohammed Salih, Hanshuo Wu, Lianhe Li, Edmund Linfield, Giles Davies, Raffaele Colombelli, and Sukhdeep Dhillon "Time resolved spectroscopy of THz intersubband polaritons at small k vector", Proc. SPIE 11499, Terahertz Emitters, Receivers, and Applications XI, 114990Q (20 August 2020); https://doi.org/10.1117/12.2568760
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KEYWORDS
Terahertz radiation
Polaritons
Time resolved spectroscopy
Spectroscopy
Optical pumping
Excitons
Phase matching
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