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设计了基于激活反射式钕玻璃激光放大器的抽运反射结构。反射式钕玻璃激光放大器的抽运结构与传统透射型阵列式片状放大器(MSA)不同,为提高氙灯背向抽运光的利用效率,抽运反射罩的排布与面型需要与结构形式匹配的优化设计。针对反射式钕玻璃激光放大器的独特结构形式,通过Matlab模拟仿真,提出了一种新型短翼仿渐开线型反射罩面型。用光学仿真软件TracePro进行配光追迹,得到了新型抽运反射罩的模拟传输效率,比平板反射器的模拟结果高17.58%。通过氙灯抽运的全尺寸反射式钕玻璃激光放大器实验装置,对优化结果进行了验证,实际效率提高约15.19%。
The pump reflective structure based on the activated reflective neodymium glass laser amplifier is designed. Reflective neodymium glass laser pump pumping structure and traditional transmissive array chip amplifier (MSA) is different, in order to improve xenon lamp back-pumping light utilization efficiency, pumping reflector arrangement and the surface needs and structure of the form Matching optimization design. Aiming at the unique structure of the reflective neodymium glass laser amplifier, a novel short-wing imitation involute reflector is proposed by Matlab simulation. With the light tracing software TracePro, the simulated transmission efficiency of the new pump reflector was obtained, which was 17.58% higher than that of the flat reflector. Through the xenon lamp pumping full-size reflective neodymium glass laser amplifier experimental device, the optimization results were verified, the actual efficiency increased by about 15.19%.