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Proceedings Paper

Simple, High Sensitivity Pencil Beam Light Heterodyne Interferometer
Author(s): Pawel Drabarek
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Paper Abstract

A model of the new heterodyne interferometer for testing of transparent objects, capable of providing diagrams of the optical path difference with sensitivity better than A/100 and with spatial resolutions better than 50 lines per millimeter for 50 mm diameter samples, is presented. Influences of various factors on the measurement accuracy are discussed. The results of the experiments involved prove that the instrument may be used in the following: analyses of optical specimens; analyses of the profiles of the refractive index of optical fibers; measurement of thickness of film layers; analyses of alterations of factor of refractive index of liquids. The significant advantages are as follows high sensitivity; high resistance against external factors; simplicity of the mechanicooptical system.

Paper Details

Date Published: 20 November 1985
PDF: 6 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976157
Show Author Affiliations
Pawel Drabarek, Central Laboratory of Scientific Instruments and Science "COBRABiD" (Poland)


Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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