Reduction of Lasing Threshold by Deforming a Circular Resonator
PU Xiao-Yun, XIA Yun-Jie, LEE Wing-Kee
Department of Physics, Yunnan University, Kunming 650091Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong
Reduction of Lasing Threshold by Deforming a Circular Resonator
PU Xiao-Yun;XIA Yun-Jie;LEE Wing-Kee
Department of Physics, Yunnan University, Kunming 650091Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong
关键词 ：
42.60.Da ,
42.55.Sa
Abstract ： We have reduced the lasing threshold of a circular resonator formed by a dye-doped pendant drop, by changing its shape from a circle to an oval. This phenomenon can be explained by the decrease of the number (p) of modes that support lasing in the resonator. A theory that connects wave and ray pictures in dealing with the cavity resonance is used to estimate p and its dependence on the eccentricity of an oval-shaped resonator. The measured lasing threshold and the calculated p have a linear relationship in agreement with our prediction.
Key words ：
42.60.Da
42.55.Sa
出版日期: 2002-04-01
:
42.60.Da
(Resonators, cavities, amplifiers, arrays, and rings)
42.55.Sa
(Microcavity and microdisk lasers)
引用本文:
PU Xiao-Yun;XIA Yun-Jie;LEE Wing-Kee. Reduction of Lasing Threshold by Deforming a Circular Resonator[J]. 中国物理快报, 2002, 19(4): 500-503.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I4/500
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2002, Vol. 19 
