Single quantum dot controlled lasing effects in high-Q micropillar cavities

被引：63
|
作者：
Reitzenstein, S. [1 ]
Boeckler, C. [1 ]
Bazhenov, A. [1 ,2 ]
Gorbunov, A. [1 ,2 ]
Loeffler, A. [1 ]
Kamp, M. [1 ]
Kulakovskii, V. D. [2 ]
Forchel, A. [1 ]
机构：
[1] Univ Wurzburg, Wurzburg, Germany
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 07期
关键词：
D O I：
10.1364/OE.16.004848
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Lasing effects based on individual quantum dots have been investigated in optically pumped high-Q micropillar cavities. We demonstrate a lowering of the threshold pump power from a off-resonance value of 37 mu W to 18 mu W when an individual quantum dot exciton is on-resonance with the cavity mode. Photon correlation studies below and above the laser threshold confirm the single dot influence. At resonance we observe antibunching with g((2))(0) = 0.36 at low excitation, which increases to 1 at about 1.5 times the threshold. In the off-resonant case, g((2))(0) is about 1 below and above threshold. (c) 2008 Optical Society of America.
引用
收藏
页码：4848 / 4857
页数：10
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