Relationship between refractive index and density of synthetic silica glasses
Relationship between refractive index and density of synthetic silica glasses
复制标题
合成石英玻璃的折射率与密度的关系
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
N. Ohno
中科院分区：
文献类型：
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作者：
N. Kitamura;K. Fukumi;J. Nishii;N. Ohno
研究了直接法、溶胶凝胶法和气相轴向沉积法(VAD)制备的二氧化硅玻璃中杂质和密度对折射率的影响。在从紫外到红外的宽波长范围内，折射率与密度n=C、ρ+D呈线性关系。相关系数C由1.707μm时的0.081±0.007 cm~3/g降至0.238μm时的0.061±0.008 cm~3/g，与VAD或高压致密化形成的直接玻璃不同，即由1.707μm时的0.200±0.011 cm~3/g增加到0.238μm时的0.229±0.012 cm~3/g。氯和羟基杂质对折射率有影响，但不是线性关系。在根据氯相关效应和样品密度的影响调整折射率后，样品的折射率差Δ(n2−1)与合成工艺无关，表现出类似的色散关系。一份分析报告。
The effect of impurity and density on refractive index was studied for silica glasses synthesized with direct, sol-gel, and vapor phase axial deposition (VAD) processes. Linear relationships between the refractive index and density n=Cρ+D were found in a wide wavelength region from ultraviolet to infrared. The correlation coefficient C decreased from 0.081±0.007cm3∕g at 1.707μm to 0.061±0.008cm3∕g at 0.238μm. The relationship was different from those of the VAD or direct glasses formed by high-pressure densification, that is, the coefficient increased from 0.200±0.011cm3∕g at 1.707μm to 0.229±0.012cm3∕g at 0.238μm for VAD glass. Chlorine and hydroxyl impurities affected the refractive index; however, these impurities did not cause the linear relationship. After adjusting the index according to the chlorine related effect and the effect of the sample density, the difference between the sample’s refractive indices Δ(n2−1) showed a similar dispersion relation irrespective of the synthetic process. An analysi...