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arXiv 0907.3424cond-mat.other
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柱状微腔中非基态极化激元自发凝聚

Spontaneous non-ground state polariton condensation in pillar microcavities

M. Maragkou, A. J. D. Grundy, E. Wertz, A. Lemaitre, I. Sagnes, P. Senellart, J. Bloch, P. G. Lagoudakis

摘要:

在非共振光激发下,我们观察到GaAs柱状微腔中自发驱动的非基态极化激元凝聚。我们确定了一个制度,激子-激子和对极化激元散射的相互作用可以导致模式切换从非基态到基态极化激元凝聚。一个简单的运动学模型令人满意地描述了所观察到的模式切换,因为上述散射机制中的每一个在不同的载流子密度下变得普遍。

英文摘要:

We observe spontaneously driven non-ground state polariton condensation in GaAs pillar microcavities under non-resonant optical excitation. We identify a regime where the interplay of exciton-exciton and pair polariton scattering can lead to mode switching from non-ground state to ground state polariton condensation. A simple kinematic model satisfactorily describes the observed mode switching as each of the above scattering mechanisms becomes prevalent at different carrier densities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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