Measurement method of optical film's damage threshold

Shujie Geng; Xiuhua Fu

doi:10.1117/12.482913

12 September 2002 Measurement method of optical film's damage threshold

Shujie Geng, Xiuhua Fu

Proceedings Volume 4915, Lasers in Material Processing and Manufacturing; (2002) https://doi.org/10.1117/12.482913
Event: Photonics Asia, 2002, Shanghai, China

Abstract

When laser acts on an optical film, the film will be damaged even unable to work. In this article, a kind of measurement system of optical film's damage threshold is introduced, and it is applied to the experimental research of the reflection coating. The wavelengths of reflection and transmission extremums are determined, according to their spectral characteristic curve. The absorption of the film and the capacity of the film's bearing laser damage can be decided according to the displacement ?? of relative extremum. We can determine whether the film reaches the technical requirements by this means through the measurement of the sample film. Thus we can avoid the multi-repairs of the formal workpiece. There is a fine practical value of this method.

Citation Download Citation

Shujie Geng and Xiuhua Fu "Measurement method of optical film's damage threshold", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); https://doi.org/10.1117/12.482913

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