Phase-shifting interferometry based on induced vibrations



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Quiroga Mellado, Juan Antonio and Vargas Balbuena, Javier and Álvarez Herrero, Alberto and Belenguer Dávila, Tomás (2011) Phase-shifting interferometry based on induced vibrations. Optics Express, 19 (2). pp. 584-596. ISSN 1094-4087

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The presence of uncontrolled mechanical vibrations is typically the main precision-limiting factor of a phase-shifting interferometer. We present a method that instead of trying to insolate vibrations; it takes advantage of their presence to produce the different phase-steps. The method is based on spatial and time domain processing techniques to compute first the different unknown phase-steps and then reconstruct the phase from these tilt-shifted interferograms. In order to compensate the camera movement, it is needed to perform an affine registration process between the different interferograms. Simulated and experimental results demonstrate the effectiveness of the proposed technique without the use of any phase-shifter device

Item Type:Article
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©2011 Optical Society of America

Uncontrolled Keywords:Algorithm, Interferograms
Subjects:Sciences > Physics > Optics
ID Code:22321
Deposited On:11 Jul 2013 10:26
Last Modified:28 Apr 2022 18:10

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