Role of coating defects in laser-induced damage to dielectric thin films

Publisher Website
Google Scholar
Abstract
The laser‐induced damage thresholds of two different dielectric thin‐film coatings increased with decreasing spot size and were invariant for spot sizes greater than 150 μm. A simple model has been suggested that the distribution and nature of coating defects have played an important role in this spot‐size dependence, e.g., the probability of the laser beam striking a defect site will be greater for larger spot sizes and that damage in materials can be distinguished as defect damage and intrinsic damage.
Keywords