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Optical Engineering

Analysis of the quantitative measurement for a lateral shear interferometer in a convergent beam mode using Fourier transform method
Author(s): Charles Joenathan; Ashley Bernal; Youn Woonghee; Yanzeng Li; Wanseok Oh
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Paper Abstract

Lateral shear interferometry operating in the convergent beam mode has been used for testing optical components. This method is simple and phase information of the wavefront has conventionally been extracted using phase stepping techniques. We propose to use defocus, which introduces uniform tilt as a means of extracting phase information via two procedures, namely spatial phase stepping and spatial frequency carrier method. Experimental results are presented that show the wavefront phase extracted with defocus before and after the focal point of the lens.

Paper Details

Date Published: 28 May 2014
PDF: 5 pages
Opt. Eng. 53(5) 054109 doi: 10.1117/1.OE.53.5.054109
Published in: Optical Engineering Volume 53, Issue 5
Show Author Affiliations
Charles Joenathan, Rose-Hulman Institute of Technology (United States)
Ashley Bernal, Rose-Hulman Institute of Technology (United States)
Youn Woonghee, Rose-Hulman Institute of Technology (United States)
Yanzeng Li, Rose-Hulman Institute of Technology (United States)
Wanseok Oh, Rose-Hulman Institute of Technology (United States)


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