Acta Optica Sinica, Volume. 28, Issue 8, 1590(2008)
Design of Laser Beam Real-Time Monitoring and Adaptive Collimation System
A new device is developed for real-time monitoring of laser beam quality and adaptive collimating of laser beam direction. Based on lens imaging principle, the device is composed of one CCD camera for two-dimensional imaging of laser spot and two piezoelectrically drived mirrors to correct laser beam shift by the principle of two points exactly defining a line in space. The adaptive control is performed through a home-made computer program using Lab View software. The system can collimate the beam direction in a resolution of 0.5 μrad and 1 Hz adjusting frequency, and correct the laser spot shift of period above 1 s.
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Wei Pengfei, Liu Jun, Li Xiaofang, Chen Xiaowei, Liu Peng, Li Ruxin, Xu Zhizhan. Design of Laser Beam Real-Time Monitoring and Adaptive Collimation System[J]. Acta Optica Sinica, 2008, 28(8): 1590