Defect Characteristics Of Optical Surfaces Using Pulsed Laser Damage Methods

J. O. Porteus; J. B. Franck; S. C. Seitel; S. D. Allen

doi:10.1117/12.946343

3 September 1985 Defect Characteristics Of Optical Surfaces Using Pulsed Laser Damage Methods

J. O. Porteus, J. B. Franck, S. C. Seitel, S. D. Allen

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Proceedings Volume 0525, Measurement and Effects of Surface Defects & Quality of Polish; (1985) https://doi.org/10.1117/12.946343
Event: 1985 Los Angeles Technical Symposium, 1985, Los Angeles, United States

Abstract

Laser damage to optical surfaces, particularly coated surfaces, is typically initiated by material defects which couple strongly to the laser radiation. Knowledge of damage-related defect characteristics is therefore essential to optical material development efforts and to quality control. Such characteristics include individual defect failure levels, defect densities, and content of optically absorbing impurities. Defect failure distributions containing defect density information can be inferred from properly designed laser damage measurements. The data also permit distinction between different damage mechanisms, including nondefect-related mechanisms involving the substrate. Inclusions containing volatile, optically absorbing impurities can be detected by mass analysis of laser-desorbed vapors. These methods will be described, and examples of results will be presented.

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J. O. Porteus, J. B. Franck, S. C. Seitel, and S. D. Allen "Defect Characteristics Of Optical Surfaces Using Pulsed Laser Damage Methods", Proc. SPIE 0525, Measurement and Effects of Surface Defects & Quality of Polish, (3 September 1985); https://doi.org/10.1117/12.946343

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KEYWORDS

Data modeling

Failure analysis

Laser induced damage

Information operations

Optical coatings

Mirrors

Laser development

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