针对高功率、大口径薄片激光器, 提出了采用半导体制冷片阵列对薄片激光介质进行分区域主动冷却的方法, 通过调节各单元半导体制冷片的工作电压, 改变阵列的冷却效率分布, 实现了对薄片激光介质的局部温度的控制, 进而使得薄片介质的横向温度分布均匀, 降低了热效应的影响, 为薄片激光器的冷却设计提供了新思路, 并通过实验验证了该方法的可行性。

A district cooling approach based on the thermoelectric devices array for high-power large-aperture Nd:YAG disk-type solid state laser media is presented. The cooling efficiency distribution of the thermoelectric devices is controlled by their working voltage, consequently, district temperature control of disk media is realized and a uniform lateral temperature distribution is obtained. And this method reduces the thermal effects and offeres a new idea of thermal management in disk lasers. The experiments demonstrate that the heating and cooling can be controlled to obtain a desired temperature distribution in thin gain media.