Thickness measurement of transparent plates by a self-mixing interferometer

被引：46

作者：

Fathi, Mohammad Taghi ^{[1
]}

Donati, Silvano ^{[1
]}

机构：

[1] Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy

来源：

OPTICS LETTERS | 2010年 / 35卷 / 11期

关键词：

REFRACTIVE-INDEX;

D O I：

10.1364/OL.35.001844

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We introduce a technique to measure transparent glass slab thickness. It employs a very simple setup combining two interferometers: a forward-going beam scheme and a self-mixing readout of the beam reflected back to the laser source. Interestingly, the difference of the two readouts provides a quantity related to thickness measurement, irrespective of refractive index. We demonstrate this method using samples on a range of thickness from 30 to 1000 mu m. (C) 2010 Optical Society of America

引用

页码：1844 / 1846

页数：3

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