10 July 2012 193-nm-laser-induced spectral shift in HR coated mirrors
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Abstract
High-reflectance mirrors, fabricated by use of fluoride coating materials, were irradiated for extended periods by a 193-nm kilohertz repetitive laser source. This irradiation promoted a spectral shift in the reflectance band towards shorter wavelengths. In efforts to determine the mechanism for the observed spectral shifts, various models were investigated by employing such techniques as spectrophotometry, surface profile interferometry, coating design simulation, and x-ray diffraction. The result of the investigation indicates that layers near the top surface of the coating structure underwent densification, which resulted in the observed spectral shift.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Byungil Cho, Byungil Cho, J. Earl Rudisill, J. Earl Rudisill, Edward J. Danielewicz, Edward J. Danielewicz, } "193-nm-laser-induced spectral shift in HR coated mirrors," Optical Engineering 51(12), 121804 (10 July 2012). https://doi.org/10.1117/1.OE.51.12.121804 . Submission:
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