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Optical Engineering

One-shot shape measurement of small objects with a pulsed laser and modulation of polarization
Author(s): Anmi García-Arellano; William Cruz-Santos; Guadalupe García-Arellano; Juvenal Rueda-Paz
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Paper Abstract

We present an alternative shape measurement setup based on a one-shot phase-shifting method employing the modulation of polarization and phase grating interferometry. The setup implementation was carried out with a Mach–Zehnder interferometric arrangement and a synchronized system of a pulsed laser and a fast camera. Under the proposed configuration, a test object is illuminated by two beams of circularly polarized light oppositely rotating, coming from the interferometric arrangement. The reflected light is then conduced to a phase grating interferometry system to generate several phase-shifted fringe patterns in one-shot. To show the feasibility of our proposal, we present some experimental results of a retrieved wrapped phase of a test object and analyzed it using a quality-guide phase unwrapping algorithm to obtain the continuous phase.

Paper Details

Date Published: 15 June 2017
PDF: 4 pages
Opt. Eng. 56(6) 064102 doi: 10.1117/1.OE.56.6.064102
Published in: Optical Engineering Volume 56, Issue 6
Show Author Affiliations
Anmi García-Arellano, CONACYT–ECOSUR (México)
William Cruz-Santos, Univ. Autónoma del Estado de México (México)
Guadalupe García-Arellano, Univ. Pierre et Marie Curie (France)
Juvenal Rueda-Paz, Univ. Autónoma del Estado de Morelos (México)

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