Polariton lasing in high-quality selenide-based micropillars in the strong coupling regime
Polariton lasing in high-quality selenide-based micropillars in the strong coupling regime
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DOI：
10.1063/1.4928492
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发表时间：
2015-08-17
影响因子：
4
通讯作者：
Richard, M.
中科院分区：
文献类型：
--
作者：
Klein, T.;Klembt, S.;Richard, M.
我们设计并制造了全外延 ZnSe 基光学微柱，表现出激子跃迁和受限光学腔模式之间的强耦合机制。在低温下，在非共振脉冲光激发下，我们演示了微柱中的单横模极化激元激光操作。由于这些微结构的高品质因数，即使在最小直径的微柱中，激光阈值仍然很低。我们表明，这一特征可以追溯到低于 3 nm 的侧壁粗糙度晶粒尺寸以及抑制面内极化子逃逸。 (C) 2015 年作者。
We have designed and fabricated all-epitaxial ZnSe-based optical micropillars exhibiting the strong coupling regime between the excitonic transition and the confined optical cavity modes. At cryogenic temperatures, under non-resonant pulsed optical excitation, we demonstrate single transverse mode polariton lasing operation in the micropillars. Owing to the high quality factors of these microstructures, the lasing threshold remains low even in micropillars of the smallest diameter. We show that this feature can be traced back to a sidewall roughness grain size below 3 nm and to suppressed in-plane polariton escape. (C) 2015 Author(s).