External optical feedback effects in a frequency locking dual frequency laser

被引：0
|
作者：
Mao, Wei [1 ]
Zhang, Shulian [1 ]
Tan, Yidong [1 ]
Liu, Weixin [1 ]
机构：
[1] Tsing Hua Univ, State Key Lab Precis Measurement Technol & Instru, Dept Precis Instruments, Beijing 100084, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2007年 / 271卷 / 02期
关键词：
optical feedback; frequency locking; mode competition; displacement sensor; directional discrimination;
D O I：
10.1016/j.optcom.2006.10.035
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a systematic study of external optical feedback effects on the output characteristics of the two orthogonally polarized modes in a frequency locking dual frequency laser. Accompanied by the change of the external cavity length, the length of the resonance cavity is changed very slowly to set the oscillating modes sweeping across the laser gain curve. Comprehensive results are obtained and a strong mode competition is observed. Particularly, when the laser runs in the middle region of the gain curve, which mode can oscillate is determined by the movement direction of the external feedback mirror. Based on the phenomenon, a displacement sensor with directional discrimination is proposed and its capability is also discussed. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：492 / 498
页数：7
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