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温度控制是实现全内腔半导体泵浦Nd:YAG微片激光器稳频的行之有效的手段之一。研究了如何为Nd:YAG微片激光器的稳频提供有效的温控方式。估算出所需要的控温精度——波动范围在±0.09℃以内。依据这一设计目标,介绍了各重要环节的设计过程。通过频域分析法,对温控系统的特性进行分析与调整。通过理论计算将系统改造成了二阶系统最优模型并用实验验证了理论分析。研制了一套用于全内腔半导体泵浦Nd:YAG微片激光器的温控系统,并在两种条件下对系统进行了测试。在室温26℃左右的条件下,可以给微片提供18～38℃之间的任意温度环境,温度波动范围在±0.05℃以内;当环境温度在18～27℃之间任意改变时,系统能将晶片温度稳定在24℃,温度波动范围在±0.05℃以内。
Temperature control is one of the most effective means to realize frequency stabilization of full-cavity semiconductor pumped Nd: YAG microchip laser. How to provide an effective temperature control mode for the frequency stabilization of Nd: YAG microchip lasers is studied. Estimated the required temperature accuracy - fluctuations in the range of ± 0.09 ℃. According to this design goal, introduced the design of each important part of the process. Through frequency domain analysis, the characteristics of temperature control system are analyzed and adjusted. Through the theoretical calculation, the system was transformed into the second-order system optimal model and the experimental analysis was carried out to verify the theoretical analysis. A temperature control system for a full cavity semiconductor pumped Nd: YAG microchip laser was developed and the system was tested under two conditions. Under the condition of room temperature about 26 ℃, the microchip can be provided with any temperature environment between 18 ~ 38 ℃, the temperature fluctuation range is within ± 0.05 ℃; when the ambient temperature is arbitrarily changed between 18 ~ 27 ℃, the system can The chip temperature is stable at 24 ℃, temperature fluctuations in the range of ± 0.05 ℃ or less.