热－力破坏效应是导致光电器件激光损伤的重要因素。以激光与材料相互作用机理为基础，建立了激光辐照光学材料、光电器件的热－力学模型，并对其温度场分布和热应力场分布进行了解析求解。在此基础之上，对激光对K9玻璃、类金刚石薄膜、胶合透镜和HgCdTe探测器的热－力破坏效应进行了数值分析和实验研究。

Thermal and mechanical breakage is the key factor of laser damage on optical and photoelectric elements. The thermal-mechanical model of optical materials, optical and photoelectric elements induced by high power laser is set up based on laser-material interaction mechanism, and the transient temperature field distribution and thermal stress field induced by laser are analyzed through resolving the heat conduction equation. The numerical simulation and experimental research of laser induced thermal and mechanical breakage on K9 glass, diamond-like carbon films, glue lens and HgCdTe detector are carried out.