激光辐照下锗材料热形变的实验研究

红外光学系统的镜片组件在环境温度较高时会发生热形变,特别是在局部温度过高时,镜片的面形、厚度的变化会对成像质量有着不可忽视的影响。为了研究红外光学镜片的热形变,利用波长为1.06μm准连续激光辐照锗单晶平片,实时监测锗材料在不同辐照时间下的形变及对成像质量的影响。所得实验数据可为镜片热形变的理论分析提供参考。

Experiment Research on Germanium Material Thermal Deformation under Laser Irradiation

Thermal deformation will generate when lenses components in infrared optical system is in higher temperature environment. Especially over high temperature at local part, the surface shape and thickness of lenses will be changed and imaging quality will be influenced. For researching the thermal deformation of infrared optical lenses, quasi continuous laser with 1.06 μm wavelength is used to irradiate Germanium wafer to detect Germanium material deformation at different irradiation duration in real time. And the influence on imaging quality is researched. Obtained experimental data can provide references for lenses thermal deformation theoretical analysis.