Super-radiant mode in InAs-monolayer-based Bragg structures.
Super-radiant mode in InAs-monolayer-based Bragg structures.
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DOI：
10.1038/srep14911
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发表时间：
2015-10-12
影响因子：
4.6
通讯作者：
Clark SJ
中科院分区：
文献类型：
--
作者：
Pozina G;Kaliteevski MA;Nikitina EV;Denisov DV;Polyakov NK;Pirogov EV;Goray LI;Gubaydullin AR;Ivanov KA;Kaliteevskaya NA;Egorov AY;Clark SJ
我们报告了布拉格结构中集体超辐射模式的直接实验证据，该结构包含60个周期性排列在GaAs矩阵中的InAs单层量子威尔斯（QW）。时间分辨光致发光测量揭示了额外的超辐射模式的外观，起源于量子阱的相干集体相互作用。该模式表明强度和辐射衰减速率对激发功率的超线性依赖性。在只有少量量子阱被激发的情况下，超辐射模式并不明显。
We report direct experimental evidence of the collective super-radiant mode in Bragg structure containing 60 InAs monolayer-based quantum wells (QWs) periodically arranged in GaAs matrix. Time-resolved photoluminescence measurements reveal an appearance of the additional super-radiant mode, originated from coherent collective interaction of QWs. This mode demonstrates a super-linear dependence of the intensity and radiative decay rate on the excitation power. The super-radiant mode is not manifested in the case if only a small number of QWs is excited.