Refractive-index dispersion of gases measured by optical harmonic phase matching.
Refractive-index dispersion of gases measured by optical harmonic phase matching.
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通过光学谐波相位匹配测量气体的折射率色散。
DOI：
10.1103/physreva.33.72
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Mizrahi
中科院分区：
文献类型：
--
作者：
Shelton;Mizrahi
提出了一种精确测量气体折射率色散的新方法。该技术利用了相位匹配条件，该条件适用于在电场感应二次谐波产生实验中受到空间周期性电场作用的样本。可达到的精度与干涉测量方法相当，并且该方法可以扩展到测量真空-紫外范围内的折射率。给出了 He、Ar、H 2、D 2、N 2 和 O 2 在 λ≥ 229 nm 处的折射率结果。
A new method for accurately measuring the dispersion of the refractive index of gases is presented. The technique makes use of the phase-matching condition which applies to a sample subjected to a spatially periodic electric field in an electric-field-induced second-harmonic generation experiment. The attainable accuracy is comparable to that of interferometric methods, and this method may be extended to measure the refractive index in the vacuum-ultraviolet range. Results are given for the refractive index at λ≥ 229 nm for He, Ar, H 2, D 2, N 2, and O 2.