| 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(4):319-322. |
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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 621900;2. 华南师范大学 量子电子学研究所， 广东 广州 510631； 3. 中国科学院 上海光学精密机械研究所， 上海 201800 |
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| 基金项目： | 国家863计划项目资助课题 |
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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 |
| 文章编号： | 1001-4322(2003)04-0319-04 |
| 收稿时间： | 2002/11/19 |
| 修稿时间： | 2002年11月19 |
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(4):319-322. |
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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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| Institution: | (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 (1.06 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. |
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| Keywords: | CW laser Interference filter Refractive index Transmission Film damage |
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