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TEC存在功率有限、制冷效率低的问题,在用于大功率半导体激光器的温度控制时,常常无法达到所需的制冷效果。通过理论研究、软件仿真和实验验证,总结和提出了根据LD热负载选择TEC的理论依据和方法,以及与之匹配的大功率散热结构的设计优化准则。经实验验证,根据此原则设计的温控系统可在环境温度-40～55℃时,对30W的LD实现恒温控制,温控范围20～40℃,温控精度0.5℃,实验结果表明此方法可以提高系统的整体效率,在设计大功率半导体激光器温控系统时具有一定的参考价值。
TEC has the problem of limited power and low cooling efficiency, and often fails to achieve the required cooling effect when used for temperature control of high-power semiconductor lasers. Through theoretical research, software simulation and experimental verification, the theoretical basis and method for selecting TEC based on LD thermal load are summarized and put forward. The experimental verification shows that the temperature control system designed according to this principle can control the temperature of 30W LD at the ambient temperature of -40 ~ 55 ℃ with the temperature range of 20 ~ 40 ℃ and the temperature control precision of 0.5 ℃. The experimental results show that this method Can improve the overall efficiency of the system, in the design of high-power semiconductor laser temperature control system has a certain reference value.