Instrumentation, Techniques, and Measurement

One-shot shape measurement of small objects with a pulsed laser and modulation of polarization

[+] Author Affiliations
Anmi García-Arellano

CONACYT–ECOSUR, Unidad Chetumal, Chetumal, Quintana Roo, México

William Cruz-Santos, Juvenal Rueda-Paz

CU–UAEM, Valle de Chalco, Estado de México, México

Guadalupe García-Arellano

UPCM University Paris 06, Institut des NanoSciences de Paris, UMR 7588, Paris, France

Opt. Eng. 56(6), 064102 (Jun 15, 2017). doi:10.1117/1.OE.56.6.064102
History: Received February 17, 2017; Accepted May 30, 2017
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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.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Anmi García-Arellano ; William Cruz-Santos ; Guadalupe García-Arellano and Juvenal Rueda-Paz
"One-shot shape measurement of small objects with a pulsed laser and modulation of polarization", Opt. Eng. 56(6), 064102 (Jun 15, 2017). ; http://dx.doi.org/10.1117/1.OE.56.6.064102


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