Talbot array illuminator for single-shot measurements of laser-induced-damage thresholds of thin-film coatings |
| |
Authors: | Siegel C Loewenthal F Balmer J E Weber H P |
| |
Affiliation: | Institute of Physics, Sidlerstrasse 5, Bern, Switzerland. |
| |
Abstract: | A highly efficient Talbot array illuminator for single-shot, laser-induced-damage test measurements of optical thin-film coatings is proposed. With a periodic binary phase grating, a laser beam is transformed into an ensemble of Gaussian-like spots, which are known as the Fresnel image of the grating. For this purpose hexagonal phase gratings were fabricated and analyzed. With a peak fluence distribution of ~1 order of magnitude, the damage threshold of thin films can be deduced by use of the data from only a single shot. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|