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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 36 — Dec. 20, 2012
  • pp: 8687–8692

Laser-induced damage behaviors of antireflective coatings at cryogenic condition

He Wang, Weili Zhang, and Hongbo He  »View Author Affiliations

Applied Optics, Vol. 51, Issue 36, pp. 8687-8692 (2012)

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The laser-induced damage to antireflective coatings on Yb:YAG crystals under different temperatures was investigated. An optical profiler, field-emission scanning-electron microscopy, and a step profiler were used to determine the damage morphology, including size and depth. The results show that there is about 5J/cm2 decrease in the laser-induced damage threshold of cryogenic conditions compared to that of room temperature in 1-on-1 test mode, and a 3J/cm2 decrease in 100-on-1 mode. There is an accumulation effect in both cases. Meanwhile, the damage areas and depths are also much larger under cryogenic conditions. The precipitation of the subsurface defects in the substrate and the thermal stress in the interface between the film and the substrate under cryogenic conditions are considered to be the key factors in the unique damage behaviors.

© 2012 Optical Society of America

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(310.1210) Thin films : Antireflection coatings

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 19, 2012
Revised Manuscript: November 21, 2012
Manuscript Accepted: November 26, 2012
Published: December 20, 2012

He Wang, Weili Zhang, and Hongbo He, "Laser-induced damage behaviors of antireflective coatings at cryogenic condition," Appl. Opt. 51, 8687-8692 (2012)

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