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Proceedings Paper

Adaptive photodetector versus conventional method for localization of the Talbot self-images
Author(s): Ileana Guízar-Iturbide; Luis Gerardo de la Fraga; Ponciano Rodríguez-Montero; Svetlana Mansurova
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Paper Abstract

We present the experimental study of a new method that uses an adaptive photodetector based on the nonsteady- state photoelectromotive force (photo-EMF) effect for measuring the visibility of the Talbot patterns generated by a Ronchi grating. It was demonstrated that the photo-EMF based detector could be used for efficient localization of planes with minimal and maximal visibility in real time, with high spatial resolution and without any signal processing. The possibility for localization of self-images in turbid media was also investigated. Finally, the performance of our method was compared against conventionally used method based on analysis of images obtained by CCD camera.

Paper Details

Date Published: 2 August 2010
PDF: 10 pages
Proc. SPIE 7790, Interferometry XV: Techniques and Analysis, 779018 (2 August 2010); doi: 10.1117/12.860072
Show Author Affiliations
Ileana Guízar-Iturbide, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Luis Gerardo de la Fraga, Ctr. de Investigación y de Estudios Avanzados (Mexico)
Ponciano Rodríguez-Montero, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Svetlana Mansurova, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)

Published in SPIE Proceedings Vol. 7790:
Interferometry XV: Techniques and Analysis
Catherine E. Towers; Joanna Schmit; Katherine Creath, Editor(s)

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