Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity
arXiv:1408.0917 · doi:10.1103/PhysRevB.90.075103
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 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. \textbf{108}, 197401 (2012)]. However, no distinct signatures of a exciton state could be identified, which indicates a low two-photon pumping efficiency.
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- Valley polarized relaxation and upconversion luminescence from Tamm-Plasmon Trion-Polaritons with a MoSe2 monolayer
- Tracking Dark Excitons with Exciton Polaritons in Semiconductor Microcavities
- Spatiotemporal imaging of nonlinear optics in van der Waals waveguides
- Terahertz Spectroscopy of Semiconductor Microcavity Lasers I: Photon Lasers
- Temporal Signature of Bosonic Stimulation Induced by Dark Exciton in a Two-photon Pumped Polariton Condensate