TY - JOUR
T1 - Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity
AU - Schmutzler, J.
AU - Aßmann, M.
AU - Czerniuk, T.
AU - Kamp, M.
AU - Schneider, C.
AU - Höfling, S.
AU - Bayer, M.
N1 - 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).
PY - 2014/8/4
Y1 - 2014/8/4
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.90.075103
DO - 10.1103/PhysRevB.90.075103
M3 - Article
AN - SCOPUS:84905757886
SN - 1098-0121
VL - 90
JO - Physical Review. B, Condensed matter and materials physics
JF - Physical Review. B, Condensed matter and materials physics
IS - 7
M1 - 075103
ER -