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1. R&amp
2. D Center for Optical Thin Film Coating Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Shanghai 201800, China
收稿日期:2005-06-06,
修回日期:2005-06-16,
网络出版日期:2005-08-30,
纸质出版日期:2005-08-30
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SHAO Jian-da, FAN Zheng-xiu. Investigation of high power laser coatings[J]. 光学精密工程, 2005,13(4):471-479.
SHAO Jian-da, FAN Zheng-xiu. Investigation of high power laser coatings[J]. Optics and precision engineering, 2005, 13(4): 471-479.
High laser-induced damage threshold and large aperture were focuses on the studies of high power laser coatings. This paper reports the research activities at our center. Several measures were developed for evaluating characters of laser damage
including determination of laser induced damage threshold and detection of absorption based on surface thermal lensing technique. Defect was deemed to be the initial source of laser damage
and was the main factor restricting the laser damage resistance of optical coatings. The contribution of several kinds of typical defects to laser damage was analyzed
and some deposition measures were adopted to control and eliminate the origin of defect. Furthermore
some post-treatment methods were also employed to alleviate the influence of the defect and to improve the laser damage resistance. Correction mask was introduced to improve the thickness uniformity
and the thickness uniformity can be amended to less than 1% in the range of
Φ
650 mm. Preliminary investigation related to surface deformation was also conducted.
High laser-induced damage threshold and large aperture were focuses on the studies of high power laser coatings. This paper reports the research activities at our center. Several measures were developed for evaluating characters of laser damage
including determination of laser induced damage threshold and detection of absorption based on surface thermal lensing technique. Defect was deemed to be the initial source of laser damage
and was the main factor restricting the laser damage resistance of optical coatings. The contribution of several kinds of typical defects to laser damage was analyzed
and some deposition measures were adopted to control and eliminate the origin of defect. Furthermore
some post-treatment methods were also employed to alleviate the influence of the defect and to improve the laser damage resistance. Correction mask was introduced to improve the thickness uniformity
and the thickness uniformity can be amended to less than 1% in the range of
Φ
650 mm. Preliminary investigation related to surface deformation was also conducted.
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