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Design of optical axis jitter control system for multi beam lasers based on FPGA
Author(s): Long Ou; Guohui Li; Chuanlin Xie; Zhiqiang Zhou
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Paper Abstract

A design of optical axis closed-loop control system for multi beam lasers coherent combining based on FPGA was introduced. The system uses piezoelectric ceramics Fast Steering Mirrors (FSM) as actuator, the Fairfield spot detection of multi beam lasers by the high speed CMOS camera for optical detecting, a control system based on FPGA for real-time optical axis jitter suppression. The algorithm for optical axis centroid detecting and PID of anti-Integral saturation were realized by FPGA. Optimize the structure of logic circuit by reuse resource and pipeline, as a result of reducing logic resource but reduced the delay time, and the closed-loop bandwidth increases to 100Hz. The jitter of laser less than 40Hz was reduced 40dB. The cost of the system is low but it works stably.

Paper Details

Date Published: 20 February 2018
PDF: 9 pages
Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106973A (20 February 2018); doi: 10.1117/12.2315082
Show Author Affiliations
Long Ou, China Academy of Engineering Physics (China)
Guohui Li, China Academy of Engineering Physics (China)
Chuanlin Xie, China Academy of Engineering Physics (China)
Zhiqiang Zhou, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 10697:
Fourth Seminar on Novel Optoelectronic Detection Technology and Application
Weiqi Jin; Ye Li, Editor(s)

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