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Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity

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Hofling_2014_PRB_Nonlinear.pdf (950.8Kb)
Date
04/08/2014
Author
Schmutzler, J.
Aßmann, M.
Czerniuk, T.
Kamp, M.
Schneider, C.
Höfling, S.
Bayer, M.
Keywords
QC Physics
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Abstract
We present a systematic investigation of two-photon excitation processes in a GaAs-based microcavity in the strong-coupling regime. We observe second harmonic generation resonant to the upper and lower polariton level, which exhibits a strong dependence on the photonic fraction of the corresponding polariton. In addition, we have performed two-photon excitation spectroscopy to identify 2p exciton states which are crucial for the operation as a terahertz lasing device, which was suggested recently [A. V. Kavokin et al., Phys. Rev. Lett. 108, 197401 (2012)]. However, no distinct signatures of a 2p exciton state could be identified, which indicates a low two-photon pumping efficiency.
Citation
Schmutzler , J , Aßmann , M , Czerniuk , T , Kamp , M , Schneider , C , Höfling , S & Bayer , M 2014 , ' Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity ' , Physical Review. B, Condensed matter and materials physics , vol. 90 , no. 7 , 075103 . https://doi.org/10.1103/PhysRevB.90.075103
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevB.90.075103
ISSN
1098-0121
Type
Journal article
Rights
© 2014 American Physical Society
Description
The Dortmund group acknowledges support from the Deutsche Forschungsgemeinschaft (Grants No. 1549/18-1 and No. 1549/19-1). M.B. acknowledges support from the Russian Ministry of Science and Education (Contract No. 14.Z50.31.0021).
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/5427

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