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16 January 2019 Diagnosis of optical film laser damage based on characteristics of plasma
Junhong Su, Jinman Ge
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Proceedings Volume 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 108381B (2019) https://doi.org/10.1117/12.2506122
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China
Abstract
Whether to diagnose accurately the laser damage of optical film or not is the key to measure the laser-induced damage threshold of the optical film, which directly affect the accurate assessment. In this paper, based on the plasma theory, researches on the characteristics of the laser-induced plasma while the optical film has been damaged in detail have been done, and theoretical and experimental analyzing on this plasma shockwave has been taken with acoustic method. The laser damage diagnosis method of optical film based on the characteristics of plasma has been proposed. The results show that, this method, taken the atomic spectrum of the laser-induced plasma spectrum and the peak value of pressure of the laser-induced plasma shockwave as the criteria, can efficiently improve the test accuracy of the laser-induced damage threshold of optical film.
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Junhong Su and Jinman Ge "Diagnosis of optical film laser damage based on characteristics of plasma", Proc. SPIE 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 108381B (16 January 2019); https://doi.org/10.1117/12.2506122
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KEYWORDS
Plasma
Laser energy
Laser induced damage
Laser damage threshold
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