Active phase control in laser coherent combination based on liquid crystal optical modulator

被引：2
|
作者：
Huang Z. [1 ]
Luo Y. [1 ]
Zhang D. [1 ]
Liu H. [1 ]
机构：
[1] Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 07期
关键词：
Coherence optics; Heterodyne method; Liquid phase modulator; Phase detection and control;
D O I：
10.3788/CJL20103707.1713
中图分类号：
学科分类号：
摘要：
In laser coherent combination, phase detection and control are most critical to master oscillator power amplifier (MOPA). Using heterodyne method, consistence of output beam phase can be ensured through real-time detection and correction of optical phase. The modulator is a liquid crystal optical phase modulator, the wavelength of the main oscillation laser is 532 nm, and the output power of laser can be adjusted continuously from 0 to 6 W. The shifted frequency of the heterodyne system is 40 MHz, and the accuracy for phase control is superior to λ/7. In the process of closed-loop control, a good signal phase correction of optical path has been achieved.
引用
收藏
页码：1713 / 1716
页数：3
相关论文
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