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  • Received: Aug. 9, 2004

    Accepted: --

    Posted: Jun. 6, 2006

    Published Online: Jun. 6, 2006

    The Author Email: Qiaoying Jia (filmsolgel@mail.siom.ac.cn)

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    Qiaoying Jia, Haiyuan Li, Ruijun Liu, Yongxing Tang, Zhonghong Jiang. Modified porous silica antireflective coatings with laser damage resistance for Ti:sapphire[J]. Chinese Optics Letters, 2005, 3(4): 04244

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Chinese Optics Letters, Vol. 3, Issue 4, 04244 (2005)

Modified porous silica antireflective coatings with laser damage resistance for Ti:sapphire

Qiaoying Jia*, Haiyuan Li, Ruijun Liu, Yongxing Tang, and Zhonghong Jiang

Author Affiliations

  • National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

Abstract

Porous SiO2 antireflective (AR) coatings are prepared from the colloidal silica solution modified with methyltriethoxysilane (MTES) based on the sol-gel route. The viscosity of modified silica suspensions changes but their stability keeps when MTES is introduced. The refractive indices of modified coatings vary little after bake treatment from 100 to 150 Celsius. The modified silica coatings on Ti:sapphire crystal, owning good homogeneity, display prominent antireflective effect within the laser output waveband (750-850 nm) of Ti:sapphire lasers, with average transmission above 98.6%, and own laser induced damage thresholds (LIDTs) of more than 2.2 J/cm2 at 800 nm with the pulse duration of 300 ps.

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