Pinning and Depinning of the Polarization of Exciton-Polariton Condensates at Room Temperature

A room temperature polariton condensate realized in a microcavity with embedded GaN quantum wells emits linearly polarized light at threshold with the plane of polarization pinned to one of the crystallographic axes. With increasing pumping power, a depinning of the polarization is observed resulting in a progressive decrease of the polarization degree of the emitted light. This depinning is understood in terms of polariton-polariton repulsion competing with the static disorder potential effect. The polarization behavior differs from that of conventional lasers where the polarization degree usually increases as a function of pumping power.


Published in:
Physical Review Letters, 104, 16, 6402
Year:
2010
ISSN:
0031-9007
Keywords:
Laboratories:




 Record created 2010-10-05, last modified 2018-03-17


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