A reversibly tunable photonic crystal nanocavity laser using photochromic thin film

被引：18
|
作者：
Sridharan, Deepak [1 ,2 ,3 ]
Bose, Ranojoy [1 ,2 ,3 ]
Kim, Hyochul [1 ,2 ,3 ]
Solomon, Glenn S. [3 ]
Waks, Edo [1 ,2 ,3 ]
机构：
[1] Univ Maryland, Dept Elect Engn, College Pk, MD 20742 USA
[2] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA
[3] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 06期
基金：
美国国家科学基金会;
关键词：
SINGLE-QUANTUM-DOT;
D O I：
10.1364/OE.19.005551
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a reversibly tunable photonic crystal quantum dot laser using a photochromic thin film. The laser is composed of a photonic crystal cavity with a bare cavity Q as high as 4500 coupled to a high density ensemble of indium arsenide quantum dots. By depositing a thin layer of photochromic material on the photonic crystal cavities, the laser can be optically tuned smoothly and reversibly over a wavelength range of 2.68 nm. Lasing is observed at temperatures as high as 80 K in the 900-1000 nm near-infrared wavelength range. The spontaneous emission coupling factor is measured to be as high as beta = 0.41, indicating that the laser operates in the high-beta regime. (C)2011 Optical Society of America
引用
收藏
页码：5551 / 5558
页数：8
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