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Optical Engineering

Amplitude Distribution Measurement Using Heterodyne Interferometry And Its Application To Position Sensing
Author(s): Jean Louis Meyzonnette; N. Balasubramanian
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Paper Abstract

This paper describes a method of measuring the amplitude and phase distribution of the optical field at and in the vicinity of the focus of any imaging system. The directional characteristic of optical heterodyne detection provides a means of obtaining extremely high spatial resolution in measurement. Experimental results include the measured amplitude distribution at the focus of an off-axis holographic zone plate. The results are extended to the case of a diffusely reflecting or transmitting object to obtain a position-sensing gauge. Analysis shows that for good resolution in position sensing the illuminated area of the object should be equal to the diffraction limited spot size of the receiver aperture. A description of the heterodyne interferometer and its possible areas of application are included.

Paper Details

Date Published: 1 October 1974
PDF: 5 pages
Opt. Eng. 13(5) 135455 doi: 10.1117/12.7971747
Published in: Optical Engineering Volume 13, Issue 5
Show Author Affiliations
Jean Louis Meyzonnette, University of Rochester (United States)
N. Balasubramanian, University of Rochester (United States)

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