Multiwavelength ultralow-threshold lasing in quantum dot photonic crystal microcavities

被引：5
|
作者：
Chakravarty, S. [1 ]
Bhattacharya, P. [1 ]
Chakrabarti, S. [1 ]
Mi, Z. [1 ]
机构：
[1] Univ Michigan, Solid State Elect Lab, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
来源：
OPTICS LETTERS | 2007年 / 32卷 / 10期
关键词：
D O I：
10.1364/OL.32.001296
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate multiwavelength lasing of resonant modes in linear (L3) microcavities in a triangular-lattice 2D photonic crystal (PC) slab. The broad spontaneous emission spectrum from coupled quantum dots, modified by the PC microcavity, is studied as a function of the intensity of incident optical excitation. We observe lasing with an ultralow-threshold power of similar to 600 nW and an output efficiency of approximately 3% at threshold. Two other resonant modes exhibit weaker turnon characteristics and thresholds of similar to 2.5 and 200 mu W, respectively. (C) 2007 Optical Society of America
引用
收藏
页码：1296 / 1298
页数：3
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