Dependence of lasing threshold on Q factor in a deformed microcavity laser

被引：0
作者：
Lee, Ji-Won [1 ]
Yu, Hyeon-Hye [1 ]
Yi, Chang-Hwan [1 ]
Kim, Chil-Min [1 ]
机构：
[1] Sogang Univ, Dept Phys, Seoul 121742, South Korea
来源：
OPTICS LETTERS | 2014年 / 39卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
LABEL-FREE; EMISSION;
D O I：
10.1364/OL.39.002676
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The relationship between lasing threshold and quality (Q) factor is investigated. When a deformed microcavity laser composed of a circular arc and an isosceles trapezoid is excited by current injection, various modes lase in ten emission directions. The lasing modes are classified into four groups, and the lasing threshold of each mode group is obtained according to emission spectra. The Q factor of each mode group is obtained from the resonance by comparing the far-field patterns of resonances with those of mode groups. Through the study, we find that the lasing threshold strongly depends on the Q factor. (C) 2014 Optical Society of America
引用
收藏
页码：2676 / 2679
页数：4
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