Mapping Of Absorption In Optical Coatings
Absorption characteristics of optical coatings have been observed using infrared photothermal radiometry as a noncontact diagnostic technique. The local laser-induced temperature rise was measured as a function of position on the coatings. The data was used to calculate the absorption of the coatings and to identify point sites with atypical absorption. The coating samples were tantala/silica multilayers designed to be high reflectors at 1.32 μm. The tests were done with a 1.32 μm, continuous-wave Nd: YAG laser and a HgCdTe infrared camera.
S. E. Watkins et al., "Mapping Of Absorption In Optical Coatings," Proceedings of SPIE - The International Society for Optical Engineering, vol. 1624, pp. 246 - 255, Society of Photo-optical Instrumentation Engineers, Jul 1992.
The definitive version is available at https://doi.org/10.1117/12.60110
Electrical and Computer Engineering
Keywords and Phrases
Absorption; Calorimetry; Infrared radiometry; Optical coatings
International Standard Serial Number (ISSN)
Article - Conference proceedings
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29 Jul 1992