用于氙灯阵列的渐开线翼面反射器
Reflectors with section shape of incomplete involute and imitation of involute for Xe flash-lamp array
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摘要: 用光线追踪法分析反射翼几何形状对氙灯反射器光传输效率的影响。提出一种新的反射器几何构型——仿渐开线型，其外形与标准渐开线相似，但翼展宽度短于标准渐开线反射器。用蒙特卡罗法模拟氙灯光能量在激光泵浦腔内的反射和吸收过程，计算结果显示：在合理选择反射翼的几何修正系数前提下，“仿渐开线型”反射器的光传输效率优于“短翼渐开线型”的光传输效率。在腔长、灯内径等设计约束条件受限的条件下，采用“仿渐开线”设计方法，能够最大限度地增大氙灯阵列输出的总泵浦能量。Abstract: The influence of geometry of reflector on pumping performance of Xe flash-lamp array are analyzed by Monto-Carlo simulation methods in this paper. A novel reflector is proposed, which is simile in form to involute, and has advantages of smaller width than that of standard involute. Simulation results by ray-tracing method show that the transport efficiency Em of pumping energy in the reflector of new geometric shape (imitation of involute) is 90% approximately, when its geometric modified index p ³ 0.80 in 6 Xe lamps cavity. The reflectors with section shape of incomplete involute or imitation of involute, as an altermative of standard involute, are useful to increase pumoing energy in Chinese SG-III high power laser facility, when it’s length of pumping cavity is shorter than that n
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