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Proceedings Paper

Low-cost automated system for phase-shifting and phase retrieval based on the tunability of a laser diode
Author(s): Uriel Rivera-Ortega; Joris Dirckx
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Paper Abstract

A low-cost and fully automated process for phase-shifting interferometry by continuously changing and turning on-off the input voltage of a laser diode under the scheme of an unbalanced Twyman-Green interferometer setup is presented. The input signal of a laser diode is controlled by a Data Acquisition (NI-DAQ) device which permits to change its wavelength according to its tunability features. The automation and data analysis will be done using LabVIEW in combination with MATLAB. By using Carré algorithm the phase map is obtained. Measurements of visibility and phase-shift to verify the PSI requirements are also shown.

Paper Details

Date Published: 28 September 2016
PDF: 6 pages
Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 99470I (28 September 2016); doi: 10.1117/12.2230383
Show Author Affiliations
Uriel Rivera-Ortega, Univ. Popular Autónoma del Estado de Puebla (Mexico)
Joris Dirckx, Univ. Antwerpen (Belgium)


Published in SPIE Proceedings Vol. 9947:
Current Developments in Lens Design and Optical Engineering XVII
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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