| Influence of Vacuum Organic Contaminations on Laser-Induced Damage of 1064 nm Anti-Reflective Coatings |
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| 作者姓名： | 崔云 刘世杰 贺洪波 赵元安 邵建达 范正修 |
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| 作者单位： | [1]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| 摘 要： | We investigate the influence of vacuum organic contaminations on laser-induced damage threshold （LIDT） of optical coatings. Anti-reflective （AIR） coatings at 1064 nm made by Ta2 O5/SiO2 are deposited by the ion beam sputtering method. The LIDTs of AR coatings are measured in vacuum and in atmosphere, respectively. It is exhibited that contaminations in vacuum are easily to be absorbed onto optical surface because of lower pressure, and they become origins of damage, resulting in the decrease of LIDT from 24.5J/cm^2 in air to 15.TJ/cm^2 in vacuum. The LIDT of coatings in vacuum has is slightly changed compared with the value in atmosphere after the organic contaminations are wiped off. These results indicate that organic contaminations are the main reason of the LIDT decrease in vacuum. Additionally, damage morphologies have distinct changes from vacuum to atmosphere because of the differences between the residual stress and thermal decomposability of filmy materials.
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| 关 键 词： | 离子束 真空 器官污染 散射 激光致损伤 |
| 收稿时间： | 2007-4-4 |
| 修稿时间： | 2007-04-04 |
Influence of Vacuum Organic Contaminations on Laser-Induced Damage of 1064nm Anti-Reflective Coatings |
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| CUI Yun,LIU Shi-Jie,HE Hong-Bo,ZHAO Yuan-An,SHAO Jian-Da,FAN Zheng-Xiu.Influence of Vacuum Organic Contaminations on Laser-Induced Damage of 1064 nm Anti-Reflective Coatings[J].Chinese Physics Letters,2007,24(10):2873-2875. |
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| Authors: | CUI Yun LIU Shi-Jie HE Hong-Bo ZHAO Yuan-An SHAO Jian-Da FAN Zheng-Xiu |
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| Institution: | 1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100049[4mm] |
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| Abstract: | We investigate the influence of vacuum organic contaminations on laser-induced damage threshold (LIDT) of optical coatings. Anti-reflective (AR) coatings at 1064\,nm made by Ta2O5/SiO2 are deposited by the ion beamsputtering method. The LIDTs of AR coatings are measured in vacuum andin atmosphere, respectively. It is exhibited that contaminations in vacuum are easily to be absorbed onto optical surface because of lower pressure, and they become origins of damage, resulting in the decrease of LIDT from 24.5J/cm2 in air to 15.7J/cm2 in vacuum. The LIDT of coatings in vacuum has is slightly changed compared with the value in atmosphere after the organic contaminations are wiped off. These results indicate that organic contaminations are the main reason of the LIDT decrease in vacuum. Additionally, damage morphologies have distinct changes from vacuum to atmosphere because of the differences between the residual stress and thermal decomposability of filmy materials. |
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| Keywords: | 42 79 Wc 68 60 -p 78 67 Pt |
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