Effects of film stress in laser-induced damage

Autor: L. O. Jensen, T. Böntgen, H. Kessler, D. Ristau
Rok vydání: 2018
Předmět:
Zdroj: Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference.
DOI: 10.1117/12.2500213
Popis: Investigations of reduced laser-induced damage thresholds in dielectric coatings when tested under vacuum show that film stress is one of the contributors to this effect. Also, there are a number of different approaches to ensure wavefront integrity of surfaces that high stress films have been applied to. To not only identify optimum wavefront integrity but also optimum laser-induced damage threshold, a specific set of samples has been designed, coated and tested. This paper reports on these results, based on films produced in an ion beam sputtering process.
Databáze: OpenAIRE