4. Influence of irradiation parameters on laser flux behaviour, scaling laws
Operating conditions, particularly laser irradiation parameters, may differ from those of the optics' flux withstand specification. This is generally the case for a component purchased from a supplier, for which a flux resistance value is given. In this case, it is essential to know the influence of irradiation parameters on laser flux resistance, and the various existing scaling laws, in order to relate the given value to actual conditions of use.
The methods we present allow us to find operating conditions with a safety margin, but the current state of research does not allow us to accurately determine the damage thresholds and lifetime of optical components when operating parameters deviate from test conditions.
4.1 Wavelength
Damage...
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Influence of irradiation parameters on laser flux behaviour, scaling laws
Optical components for high laser flux
Bibliography
Standards and norms
- Determination of laser induced threshold on optical surfaces – part 1: 1-on-1. - ISO 11254-1 - 2000
- Determination of laser induced threshold on optical surfaces – part 2: S-on-1. - ISO 11254-2 - 2000
Patents
C. R. Wolfe, M. R. Kozlowski, J. H. Campbell, M. Staggs and F. Rainer, "Permanent laser conditioning of thin film optical materials", U.S. Patent, no. 5472748, 1990.
P. Bouchut, J.G. Coutard, A. During, "Method and device for preventive treatment of an optical surface exposed to laser flux", Patent no. FR2896794, 2007.
P. Cormont, L. Gallais and J.-L. Rullier, "Process for the...
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