Coupling effect of subsurface defect and coating layer on the laser induced damage threshold of dielectric coating

Yingjie Chai; Meiping Zhu; Kui Yi; Hongji Qi; Hu Wang; Wei Sun; Zhenkun Yu; Zhengyuan Bai; Yuanan Zhao; Jianda Shao

doi:10.1117/12.2068034

31 October 2014 Coupling effect of subsurface defect and coating layer on the laser induced damage threshold of dielectric coating

Yingjie Chai, Meiping Zhu, Kui Yi, Hongji Qi, Hu Wang, Wei Sun, Zhenkun Yu, Zhengyuan Bai, Yuanan Zhao, Jianda Shao

Author Affiliations +

Proceedings Volume 9237, Laser-Induced Damage in Optical Materials: 2014; 92370P (2014) https://doi.org/10.1117/12.2068034
Event: SPIE Laser Damage, 2014, Boulder, Colorado, United States

Abstract

The laser damage resistance of coatings for high power laser systems depends greatly on the surface quality of substrate. In this work, experimental approaches with theoretical simulation were employed to understand the coupling effect of subsurface defect and coating on the laser resistance of coating. 1064 nm anti-reflection coating was deposited by E-beam deposition on fused silica. Substrate with and without micro-scale pits were fabricated precisely by femtosecond laser processing. Experimental results indicate that impurities induced in the finishing process shifted to the substrate surface and aggregated during the heating process. Theoretical simulation result shows that the coupling effect of the aggregated impurities and coating are mainly responsible for the low LIDT of E-beam deposition coating.

Citation Download Citation

Yingjie Chai, Meiping Zhu, Kui Yi, Hongji Qi, Hu Wang, Wei Sun, Zhenkun Yu, Zhengyuan Bai, Yuanan Zhao, and Jianda Shao "Coupling effect of subsurface defect and coating layer on the laser induced damage threshold of dielectric coating", Proc. SPIE 9237, Laser-Induced Damage in Optical Materials: 2014, 92370P (31 October 2014); https://doi.org/10.1117/12.2068034

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available