ISO 11254: an international standard for the determination of the laser-induced damage threshold

Juergen Becker; Achim Bernhardt

doi:10.1117/12.180881

28 July 1994 ISO 11254: an international standard for the determination of the laser-induced damage threshold

Juergen Becker, Achim Bernhardt

Author Affiliations +

Proceedings Volume 2114, Laser-Induced Damage in Optical Materials: 1993; (1994) https://doi.org/10.1117/12.180881
Event: Laser-Induced Damage in Optical Materials: 1993, 1993, Boulder, CO, United States

Abstract

The International Organization for Standardization has published an International Standard entitled `Test Method for Laser Radiation Induced Damage Threshold of Optical Surfaces'. The testing procedure described herein is based on the damage frequency method. The damage threshold is determined from the linear extrapolation of the measured power-density dependent damage probability. A short description of the testing procedure and its theoretical background will be given. Some critical aspects like the beam diagnostics or the damage detection will be discussed more detailed. Unsolved problems of the testing procedure will be illustrated on the basis of selected examples. The measurements presented were made using a Q-switched Nd:YAG-laser with a nominal pulse duration of 15 ns. More than 500 testing sites were used for every measurement. A scatter-probe monitor was used for the damage detection. Besides a lot of encouraging results, it appeared, that some samples have a damage probability, which does not allow a reasonable extrapolation. Thus, a damage threshold cannot be given. Only in some cases this could be explained by the poor homogeneity of the samples.

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Juergen Becker and Achim Bernhardt "ISO 11254: an international standard for the determination of the laser-induced damage threshold", Proc. SPIE 2114, Laser-Induced Damage in Optical Materials: 1993, (28 July 1994); https://doi.org/10.1117/12.180881

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