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Proceedings Paper

Preparation of antireflective films on small square KH2PO4/KD2PO4 crystals by spin coating
Author(s): Bin Shen; Haiyuan Li; Liyi Zhao; Yongxing Tang
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Paper Abstract

Modified antireflective thin films for optical crystals are developed by sol gel chemistry. Hexamethyldisilazane is added to silica sol to prepare modified sol by the Stöber method. The particle size distribution of the modified sol is found to have good uniformity, with an average particle diameter of about 42.14 nm. This sol can be used to prepare antireflective films with low refractive index of about 1.2. Homogeneous double layered films of antireflective and moisture resistant properties are demonstrated to coat small square sized KH2PO4/KD2PO4 crystals through a combination of dip and spin coating. The modified antireflective films display residual reflectivity close to zero, and laser induced damage threshold of 10.9 J/cm2 (pulse wavelength: 355nm, pulse width: 3ns) measured by raster scan method.

Paper Details

Date Published: 8 March 2017
PDF: 5 pages
Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102550W (8 March 2017); doi: 10.1117/12.2264081
Show Author Affiliations
Bin Shen, Shanghai Institute of Optics and Fine Mechanics (China)
Haiyuan Li, Shanghai Institute of Optics and Fine Mechanics (China)
Liyi Zhao, Shanghai Institute of Optics and Fine Mechanics (China)
Yongxing Tang, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10255:
Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Yueguang Lv; Jialing Le; Hesheng Chen; Jianyu Wang; Jianda Shao, Editor(s)

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