【摘要】 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。更多还原

【Abstract】 Since TEC has the disadvantage of limited power and low efficiency,the cooling effect is not as effective as expected when used to control the temperature of high-power laser diodes.In this paper,theories and principles of selecting TEC according to the thermal load of LD were determined and methods of designing high-power heat sink were set out by theoretical research,software simulation and experimentation.Experimental result revealed that the system designed with the method could successfully control the temperature of a 30 W LD when the target temperature was between 20～40 ℃ and ambient temperature was-40～55 ℃.The temperature accuracy was 0.5 ℃.This result shows that the method can increase the system efficiency and it helps when designing high-power LD temperature controlling system.更多还原