H.Q.Wang
金属学报(英文版)
TiO2 thin film has attracted considerable attention in recent years, due to its different refractive index and transparency with amorphous and different crystals in the visible andnearinfrared wavelength region, high dielectric constant, wide band gap, high wear resistance and stability, etc, for which make it being used in many fields. This paper aims to investigate the optical characterization of thin film TiO2 on silicon wafer. The TiO2 thin films were prepared by DC reactive magnetron sputtering process from Ti target. The reflectivity of the films was measured by UV-3101PC, and the index of refraction (n) and extinction coefficient (k) were measured by n & k Analyzer 1200.
关键词:
optical characterization
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朱胜军
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王圣来
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丁建旭
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程秀凤
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王正平
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许心光
无机材料学报
doi:10.3724/SP.J.1077.2013.13075
环己二胺四乙酸(DCTA)作为一种新型添加剂被加入到KDP晶体生长溶液中.采用“点籽晶”快速生长技术,在掺杂100×10-6 DCTA的饱和溶液中,生长了KDP晶体,生长速度达20 mm/d.研究了这种新型添加剂DCTA对快速生长的KDP晶体的生长习性和光学质量的影响,并与常用添加剂EDTA的影响效果进行了对比.研究发现,在KDP晶体生长溶液中添加100×10-6 DCTA使生长溶液的亚稳区宽度提高了约10℃,晶体(100)面的生长速度提高了3～10倍;生长出的晶体在紫外波段的透过率上升了2～8倍,晶体内部的光散射大大减轻,激光损伤阈值也有所提高.添加剂DCTA对KDP晶体生长及性能的改善作用比同等浓度的EDTA更加显著.
关键词:
KDP晶体
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快速生长
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光学性能
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添加剂
