| 连续激光辐照ZnSe/MgF2/K9滤光片的透射特性研究 |
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| 引用本文： | 袁永华,刘颂豪,孙承纬,范正修,廖常俊,赵元安.连续激光辐照ZnSe/MgF2/K9滤光片的透射特性研究[J].强激光与粒子束,2003,15(04):0. |
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| 作者姓名： | 袁永华 刘颂豪 孙承纬 范正修 廖常俊 赵元安 |
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| 作者单位： | 1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621 900;;;2.华南师范大学 量子电子学研究所, 广东 广州 51 0631 ;;;3.中国科学院 上海光学精密机械研究所, 上海 201 800 |
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| 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0.632 8μm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。
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| 关 键 词： | 连续激光 干涉滤光片 折射率 透过率 薄膜破坏 |
CW laser induced transmission change in ZnSe/MgF2/K9 filter |
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| yuan yong hua,liu song hao,sun cheng wei,fan zheng xiu,liao chang jun,zhao yuan an.CW laser induced transmission change in ZnSe/MgF2/K9 filter[J].High Power Laser and Particle Beams,2003,15(04):0. |
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| Authors: | yuan yong hua liu song hao sun cheng wei fan zheng xiu liao chang jun zhao yuan an |
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| Affiliation: | 1. Institute of Fluid Physics,CAEP,Mianyang 621900,China;;;2. Institute of Quantum Electronics,South China Normal University,Guangzhou 510631,China;;;3. Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China |
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| Abstract: | The transmission change of ZnSe/MgF2/K9 filter induced by CW laser(1.06μm) 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 (0632 8μm). As a result of this change, the filter's transmission varies nonlinearly. When laser beam of different power with the spot diameter 0.75mm 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℃ with laser power 30W and irradiation time 2.52s, checked surface of the film is formed with irradiation time 10s. |
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| Keywords: | cw laser interference filter refractive index transmission film damage |
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