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1. 长春理工大学 光电工程学院,吉林 长春,130022
2. 中国科学院 光电研究院 北京,100085
3. 空军航空大学 外训系,吉林 长春,130022
Received:08 March 2011,
Revised:16 May 2011,
Published Online:22 August 2011,
Published:22 August 2011
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王君立, 尹福昌, 宋正勋, 王斌, 梅晓明. 高稳定输出功率的全固态激光器[J]. 发光学报, 2011,32(8): 830-833
WANG Jun-li, YIN Fu-chang, SONG Zheng-xun, WANG Bin, MEI Xiao-ming. An All-solid-state Laser with High Stability Output Power[J]. Chinese Journal of Luminescence, 2011,32(8): 830-833
王君立, 尹福昌, 宋正勋, 王斌, 梅晓明. 高稳定输出功率的全固态激光器[J]. 发光学报, 2011,32(8): 830-833 DOI: 10.3788/fgxb20113208.0830.
WANG Jun-li, YIN Fu-chang, SONG Zheng-xun, WANG Bin, MEI Xiao-ming. An All-solid-state Laser with High Stability Output Power[J]. Chinese Journal of Luminescence, 2011,32(8): 830-833 DOI: 10.3788/fgxb20113208.0830.
介绍了一种高稳定性输出功率的连续LD抽运Nd∶YVO
4
全固态532 nm激光器
输出功率为144 mW
采用LD抽运Nd∶YVO
4
晶体
KTP晶体腔内倍频方式工作。该激光器采用热电制冷器(TEC)实现对LD、KTP晶体的高精度温控
其温控精度达到0.1 ℃。建立了LD电流与输出功率的非线性曲线
通过硅光电池检测激光输出功率实现激光功率实时光反馈
采用阈值式PI控制算法进一步降低稳态误差
通过对抽运驱动电流实施反馈控制获得了波动小于1%的长时间高稳定功率输出。
A CW
LD pumped Nd∶YVO
4
532 nm green laser with high stability output power of 144 mW was reported. The laser stability was achieved by double closed-loop feedback system
which provided the high accuracy temperature control of LD and KTP crystal by thermoelectric cooler (TEC) and feedback control of laser power. The accuracy of temperature control reached the level of 0.1 ℃ in the experiment. Meanwhile
the real-time feedback of LD output power was based on the error variance of nonlinearity curve by Si-photo detecting variables with LD current. Threshold mode PI control algorithm could reduce the stable error and their output signals were used to adjust LD pump current source as so to gain the output power stability. The long-term stability was excellent with 1% variation in the output power.
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