Laser damage studies of metal mirrors and ZnSe - Optics by long pulse-And TEA-CO2-Lasers at 10.6μm
- authored by
- Wilfried Plass, Rene Krupka, Adolf Giesen, Herman E. Reedy, Michael Kennedy, Detlev Ristau
- Abstract
Single shot laser damage studies have been performed using an RF-excited long pulse laser and a TEA-CO2-laser with pulse durations of 1.2ms and 100ns, respectively. Besides bare diamond turned copper mirrors with different metal and dielectric coatings, ZnSe-optics with selected coating types were tested. The temporal damage behaviour in the long pulse regime was investigated on the basis of a damage detection system with a time resolution of 10μs. The dependence of the damage threshold on the intensity is discussed in consideration of the integral absorptance of the coatings. The measured damage thresholds of this detection system are compared to those obtained by Nomarski/darkfield microscopy. The local variation of the laser induced damage threshold is correlated to the corresponding photothermal deflection signal, reflectance, and defect density of the coated surfaces.
- External Organisation(s)
-
University of Stuttgart
Coherent Corp.
Laser Zentrum Hannover e.V. (LZH)
- Type
- Conference contribution
- Pages
- 187-200
- No. of pages
- 14
- Publication date
- 28.07.1994
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
- Electronic version(s)
-
https://doi.org/10.1117/12.180906 (Access:
Closed)
