Temperature dependence of laser-induced damage threshold of optical coatings at different pulse widths

Opt Express. 2013 Nov 18;21(23):28719-28. doi: 10.1364/OE.21.028719.

Abstract

The temperature dependence of the laser-induced damage threshold on optical coatings was studied in detail for laser pulses from 123 K to 473 K at different temperature. For pulses longer than a few picoseconds, the laser-induced damage threshold of coated substrates increased with decreasing temperature. This temperature dependence was reversed for pulses shorter than a few picoseconds. We describe the physics models to explain the observed scaling. The electron avalanche is essential to explain the differences in the temperature dependence.

Publication types

  • Research Support, Non-U.S. Gov't