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Qiao Z.,Chengdu Fine Optical Engineering Research Center and 3 Keyuan 1st Road | Ma P.,Chengdu Fine Optical Engineering Research Center and 3 Keyuan 1st Road | Liu H.,Chengdu Fine Optical Engineering Research Center and 3 Keyuan 1st Road | Pu Y.,Chengdu Fine Optical Engineering Research Center and 3 Keyuan 1st Road | Liu Z.,Chengdu Fine Optical Engineering Research Center and 3 Keyuan 1st Road
Optical Engineering | Year: 2013

Rugate and high/low quarter-wave stacks high reflector coatings for 1064 nm have been prepared with Ta2O5 and SiO2 by an ionbeam sputtering technique. A laser-induced damage experiment of the samples has been conducted at 1064 nm with pulse duration of 5 ns [full width at half maximum (FWHM)]. These two samples' damages both initiate at defects and show almost the same damage threshold within the experimental error. Nevertheless, the damage morphology on rugate is less severe at higher fluences. The thermal shock wave induced by a nanosecond pulsed laser is considered to be the main cause of catastrophic damage. © 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) © 2013 SPIE. Source

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