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Chin. Opt. Lett.
 Home  List of Issues    Issue 09 , Vol. 05 , 2007    Influence of coating material on laser damage threshold of TiO2 films


Influence of coating material on laser damage threshold of TiO2 films
Jianke Yao, Zhengxiu Fan, Hongbo He, Jianda Shao
R&
D Center for Optical Thin Film Coatings, [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences], Shanghai 201800

Chin. Opt. Lett., 2007, 05(09): pp.556-558-3

DOI:
Topic:Thin films
Keywords(OCIS Code): 310.3840  140.3330  

Abstract
The optical property, structure, surface properties (roughness and defect density) and laser-induced damage threshold (LIDT) of TiO2 films deposited by electronic beam (EB) evaporation of TiO2 (rutile), TiO2 (anatase) and TiO2+Ta2O5 composite materials are comparatively studied. All films show the polycrystalline anatase TiO2 structure. The loose sintering state and phase transformation during evaporating TiO2 anatase slice lead to the high surface defect density, roughness and extinction coefficient, and low LIDT of films. The TiO2+Ta2O5 composite films have the lowest extinction coefficient and the highest LIDT among all samples investigated. Guidance of selecting materials for high LIDT laser mirrors is given.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2007/3/21
Accepted:
Posted online:

Get Citation: Jianke Yao, Zhengxiu Fan, Hongbo He, Jianda Shao, "Influence of coating material on laser damage threshold of TiO2 films," Chin. Opt. Lett. 05(09), 556-558-3(2007)

Note: This work was supported by the National Natural Science Foundation of China under Grant No. 60608020. J. Yao's e-mail address is yjk@siom.ac.cn.



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