Chinese Optics Letters, 2015, 13 (5): 052401, Published Online: Sep. 20, 2018
Variation of coating transmission under intense laser irradiation Download: 847次
Abstract
A model that considers both thermal expansion and thermo-optical effects is developed to investigate the transmission variation of optical coatings when they are exposed to an intense laser beam. Our results indicate that a higher gradient of the transmission spectrum curve at a certain wavelength leads to a more evident variation of the coating transmission. Three customized HfO 2 – SiO 2 multilayer coatings with different transmission spectra are used to measure the transmitted power under the irradiation of a 1080 nm continuous-fiber laser. Excellent agreement is found between the experimental result and the theoretical prediction. Our result is helpful for the improvement of such devices in the application of high-power laser systems.
Zhiwu Zhu, Feng Shi, Xiangai Cheng, Chao Shen, Wen Wan, Ye Tian. Variation of coating transmission under intense laser irradiation[J]. Chinese Optics Letters, 2015, 13(5): 052401.