Design of control system for stabilization output power of diode-pumped single frequency Nd:YAG laser at 1064nm

Yi Zheng; Mingxing Jiao; Junhong Xing

doi:10.1117/12.885585

31 December 2010 Design of control system for stabilization output power of diode-pumped single frequency Nd:YAG laser at 1064nm

Yi Zheng, Mingxing Jiao, Junhong Xing

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Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75444R (2010) https://doi.org/10.1117/12.885585
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

The laser output power stability is one of the most important parameters to evaluate a laser performance. Both the operation principle and the structural features of a laser-diode (LD) end-pumped single-frequency Nd:YAG laser at 1064nm are described, the main factors that affect the stability of Nd:YAG laser output power are recieved, and a control scheme has been proposed and experimentally studied for the stabilization Nd:YAG laser output power. Because the output power of Nd:YAG laser is proportional to the injection current LD when the temperature of LD and Nd:YAG crystal rod is stable, the control scheme requires firstly that the temperature of LD and Nd:YAG crystal rod be strictly controlled, then LD's injection current be adjusted throng a negative feedback control system when Nd:YAG laser output power fluctuates. Experimental results indicate the laser output power stability is better than 1.3% within a period of 130 minutes by use of the designed control system when the output power of LD-pumped single-frequency Nd:YAG laser at 1064nm is about 11.5mW,

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Yi Zheng, Mingxing Jiao, and Junhong Xing "Design of control system for stabilization output power of diode-pumped single frequency Nd:YAG laser at 1064nm", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75444R (31 December 2010); https://doi.org/10.1117/12.885585

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KEYWORDS

Nd:YAG lasers

Laser stabilization

Control systems

Crystals

Control systems design

Laser crystals

Feedback control

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