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arXiv · 1512.01378

Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities

Przemyslaw Lewandowski·Ombline Lafont·Emmanuel Baudin·Chris K. P. Chan·P. T. Leung·Samuel M. H. Luk·Elisabeth Galopin·Aristide Lemaitre·Jacqueline Bloch·Jerome Tignon·Philippe Roussignol·N. H. Kwong·Rolf Binder·Stefan Schumacher
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Abstract

The pseudo-spin dynamics of propagating exciton-polaritons in semiconductor microcavities are known to be strongly influenced by TE-TM splitting. As a vivid consequence, in the Rayleigh scattering regime, the TE-TM splitting gives rise to the optical spin Hall effect (OSHE). Much less is known about its role in the nonlinear optical regime in which four-wave mixing for example allows the formation of spatial patterns in the polariton density, such that hexagons and two-spot patterns are observable in the far field. Here we present a detailed analysis of spin-dependent four-wave mixing processes, by combining the (linear) physics of TE-TM splitting with spin-dependent nonlinear processes, i.e., exciton-exciton interaction and fermionic phase-space filling. Our combined theoretical and experimental study elucidates the complex physics of the four-wave mixing processes that govern polarization and orientation of off-axis modes.

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Przemyslaw Lewandowski, Ombline Lafont, Emmanuel Baudin, Chris K. P. Chan, P. T. Leung, Samuel M. H. Luk, Elisabeth Galopin, Aristide Lemaitre, Jacqueline Bloch, Jerome Tignon, Philippe Roussignol, N. H. Kwong, Rolf Binder, Stefan Schumacher. 2015-12-04. Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities. https://doi.org/10.1103/physrevb.94.045308

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