REFRACTIVE-INDEX DISTRIBUTION MEASUREMENTS BY MEANS OF SPECTRALLY-RESOLVED WHITE-LIGHT INTERFEROMETRY

被引：20
|
作者：
GUERRERO, AL [1 ]
SAINZ, C [1 ]
PERRIN, H [1 ]
CASTELL, R [1 ]
CALATRONI, J [1 ]
机构：
[1] UNIV METROPOLITANA,DEPT FIS,CARACAS 1070A,VENEZUELA
来源：
OPTICS AND LASER TECHNOLOGY | 1992年 / 24卷 / 06期
关键词：
REFRACTIVE INDEX; TRANSPARENT MEDIA; INTERFEROMETRY; SPECTRAL ANALYSIS;
D O I：
10.1016/0030-3992(92)90085-G
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new procedure to measure the spatial distribution of the refractive index in transparent media is presented. It is based on the spectral analysis of optical interferograms obtained from a wide, continuous-spectrum light source. The meth,od yields fairly high precision (up to 10(-8)) in the measurements of local values of differential refractive index, DELTAn (DELTAn = n - n(ref)), along a line in the sample. By means of a CCD TV-camera linked to a microcomputer, fast recording and automatic data processing are achieved. As an application, we present an experimental study of a thermal gradient in a liquid sample.
引用
收藏
页码：333 / 339
页数：7
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