LI Bin-Cheng1, LIN Da-Wei1, HAN Yan-Ling1, GUO Chun1,2, ZHANG Yun-Dong1, LIU Hong-Xiang1
1Key Laboratory of Beam Control, and Institute of Optics andElectronics, Chinese Academy of Sciences, Chengdu 6102092Graduate University of the Chinese Academy of Sciences, Beijing100049
LI Bin-Cheng1, LIN Da-Wei1, HAN Yan-Ling1, GUO Chun1,2, ZHANG Yun-Dong1, LIU Hong-Xiang1
1Key Laboratory of Beam Control, and Institute of Optics andElectronics, Chinese Academy of Sciences, Chengdu 6102092Graduate University of the Chinese Academy of Sciences, Beijing100049
An anti-reflective (AR) fluoride coating in the 170-230 nm spectral range is prepared by the thermal evaporation method for the applications of widely tunable deep-ultraviolet diode-pumped solid-state lasers. The transmittance of an AR coated calcium fluoride (CaF2) window in thickness 3 mm is measured to be in the range of 95.8% at 170 nm to 97.1% at 230 nm, with the maximum transmittance 99.2% and the minimum residual reflectance 0.04% appeared at 195 nm. The experimental results indicate that treating the AR coated window and the bare substrate with ultraviolet irradiation can significantly improve their optical performance.
An anti-reflective (AR) fluoride coating in the 170-230 nm spectral range is prepared by the thermal evaporation method for the applications of widely tunable deep-ultraviolet diode-pumped solid-state lasers. The transmittance of an AR coated calcium fluoride (CaF2) window in thickness 3 mm is measured to be in the range of 95.8% at 170 nm to 97.1% at 230 nm, with the maximum transmittance 99.2% and the minimum residual reflectance 0.04% appeared at 195 nm. The experimental results indicate that treating the AR coated window and the bare substrate with ultraviolet irradiation can significantly improve their optical performance.
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2010, Vol. 27 
