A model for describing laser-induced damage in optical materials by nanosecond laser pulses is investigated. The laser-damage critical fluence is obtained based on calculating the light absorption of nanoabsorbers by using Mie theory and solving the heat equation. Considering a power law distribution of nano-absorbers, we calculated the damage probability at the surface of fused silica including Pt particles. The theoretical results calculated with appropriate parameters are applied to fit the experimental data in order to identify the properties of nanodefects.
© 2012 Optical Society of America
Original Manuscript: December 7, 2011
Revised Manuscript: February 26, 2012
Manuscript Accepted: March 5, 2012
Published: May 1, 2012
Gao Xiang, Feng Guoying, Han Jinghua, Chen Nianjiang, Tang Chun, and Zhou Shouhuan, "Investigation of laser-induced damage by nanoabsorbers at the surface of fused silica," Appl. Opt. 51, 2463-2468 (2012)