作　　者： ; ; ; ; ; (袁永华）;

机构地区： 中国工程物理研究院流体物理研究所

出　　处： 《强激光与粒子束》 2003年第4期319-322,共4页

摘　　要： 　分析了连续激光辐照ZnSe/MgF2/K9滤光片引起透射特性的变化。在室温条件下,用波长0 6328μm激光作为探测光束,测量了1.06μm连续激光辐照ZnSe/MgF2/K9滤光片温升引起薄膜折射率的改变,导致探测光束通过干涉滤光片后透过率的热致非线性变化。在光斑直径0.75mm条件下,测量了不同功率激光辐照ZnSe/MgF2/K9滤光片引起温升随时间的变化。在激光功率30W,辐照时间2.52s条件下,实验观测到ZnSe/MgF2/K9滤光片薄膜破坏温度约为90℃,辐照时间10s时干涉滤光片形成的薄膜龟裂形貌。 The transmission change of ZnSe/MgF2/K9 filter induced by CW laser (1.06 μm) is analyzed in this paper. At room temperature, the change of the film's refractive index induced by heating is measured with the detecting laser beam (0.632 μm). As a result of this change, the filter's transmission varies nonlinearly. When laser beam of different power with the spot diameter 0.75 mm irradiated on the ZnSe/MgF2/K9 filter, temperature change responding to irradiation time is measured. Typical experiment results are as follows: The film temperature damage threshold is 90°C with laser power 3 0W and irradiation time 2.52 s, checked surface of the film is formed with irradiation time 10 s.

关 键 词： 干涉滤光片 透射特性 连续激光辐照 热致非线性 透过率 薄膜破坏 龟裂形貌 折射率 薄膜光学

领　　域： [理学] [理学] [机械工程] [理学] [理学]