Anti-Reflective Fluoride Coatings for Widely Tunable Deep-Ultraviolet Diode-Pumped Solid-State Laser Applications

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 3mm is measur...

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Bibliographic Details
Published inChinese physics letters Vol. 27; no. 4; pp. 110 - 113
Main Author 李斌成 林大伟 韩艳玲 郭春 张云洞 刘洪祥
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2010
Subjects
Calcium fluoride
Coatings
Evaporation
Fluorides
Reflectivity
Solid state lasers
Spectra
Transmittance
二极管泵浦固体激光器
光谱范围
剩余反射率
反射涂料
可调谐
氟化物
紫外线照射
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/27/4/044201

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Summary: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 3mm 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.
Bibliography:TS103.823
11-1959/O4
TN248.1
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/4/044201