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arXiv 0907.3657cond-mat.mtrl-sci
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二维GaAs半导体微腔中的基态极化激元凝聚

Ground-state polariton condensation in 2D-GaAs semiconductor microcavities

M. Maragkou, A. J. D. Grundy, P. G. Lagoudakis

摘要:

在非共振脉冲光激发下,我们观察到二维GaAs/AlAs半导体微腔中的基态极化激元凝聚。我们通过研究极化激元光致发光的空间、角度、相干性、能量和瞬态动力学来解决极化激元凝聚体的形成。对于高的激发密度,我们还观察到从弱到强耦合制度在时域的过渡和解决的相干极化激元状态的建立。

英文摘要:

We observe ground-state polariton condensation in a two dimensional GaAs/AlAs semiconductor microcavity under non resonant pulsed optical excitation. We resolve the formation of a polariton condensate by studying the spatial, angular, coherence, energy and transient dynamics of polariton photoluminescence. For high excitation densities we also observe a transition from the weak- to the strong-coupling regime in the time-domain and resolve the build-up of a coherent polariton state.

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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