Optical Coating Absorption Measurement For High Power Laser Systems

Vaughn G. Draggoo; Richard G. Morton; Richard H. Sawicki; Horst D. Bissinger

doi:10.1117/12.961185

23 June 1986 Optical Coating Absorption Measurement For High Power Laser Systems

Vaughn G. Draggoo, Richard G. Morton, Richard H. Sawicki, Horst D. Bissinger

Proceedings Volume 0622, High Power and Solid State Lasers; (1986) https://doi.org/10.1117/12.961185
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

Abstract

A novel method has been developed for measuring surface absorption of optical coatings used in high power laser systems. Advantages of the method, which uses an infrared thermal camera to measure surface temperature and a detailed computer model of heat loss mechanisms to calculate surface absorption, include real time, non-contact measurement and in situ monitoring of optics under operational conditions. Surface absorptions ranging as low as 10-5 of the incident laser power can be measured with a 50 W test beam. The technique is used routinely to easily and quickly acquire data for coating performance sensitivity testing, coating development and for quality assessment of purchased optics. More importantly, it can identify hot absorbing coatings that are likely to fail in service or to become optically distorted in an operating laser system.

Citation Download Citation

Vaughn G. Draggoo, Richard G. Morton, Richard H. Sawicki, and Horst D. Bissinger "Optical Coating Absorption Measurement For High Power Laser Systems", Proc. SPIE 0622, High Power and Solid State Lasers, (23 June 1986); https://doi.org/10.1117/12.961185

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