光学技术, 2013, 39 (6): 526, 网络出版: 2013-11-19
用于LD泵浦NPRO单频激光器的精密温控系统
Accurate temperature control system for LD pumped single frequency NPRO laser
摘要
根据高稳定性半导体激光(LD)泵浦单块非平面环形腔(NPRO)单频激光器对于功率稳定性和频率稳定性的要求, 设计并研制了一套高精度的精密温控系统。该系统基于模拟比例-积分-微分(PID)控制原理, 采用程控调节P和PI的方式, 通过对半导体制冷器(TEC)的驱动控制, 实现在-10~+70℃范围内对LD和NPRO单块晶体温度的精确控制, 控温精度达±0.01℃。采用该温控系统的LD泵浦1645nm NPRO单频激光器, 30min内相对波长稳定性达8.32×10-7。
Abstract
Based on the requirement of LD pumped highly stable single frequency NPRO laser, an accurate temperature control system is developed. By using program-controlled P and PI arithmetic, the temperatures of the LD and laser crystal are accurately controlled from -10℃ to +70℃ with an accuracy of ±0.01℃ through driving the thermoelectric cooler (TEC). Using the temperature control system, stable single frequency laser output at 1645 nm is obtained in a LD pumped Er:YAG NPRO laser, with a relative wavelength stability of 8.32×10-7 in 30 minutes.
郑岩, 王然, 岳夫永, 高明伟, 高春清. 用于LD泵浦NPRO单频激光器的精密温控系统[J]. 光学技术, 2013, 39(6): 526. Zheng Yan, Wang Ran, Yue Fuyong, Gao mingwei, Gao Chunqing. Accurate temperature control system for LD pumped single frequency NPRO laser[J]. Optical Technique, 2013, 39(6): 526.