Adaptive photodetector versus conventional method for localization of the Talbot self-images

Ileana Guízar-Iturbide; Luis Gerardo de la Fraga; Ponciano Rodríguez-Montero; Svetlana Mansurova

doi:10.1117/12.860072

2 August 2010 Adaptive photodetector versus conventional method for localization of the Talbot self-images

Ileana Guízar-Iturbide, Luis Gerardo de la Fraga, Ponciano Rodríguez-Montero, Svetlana Mansurova

Proceedings Volume 7790, Interferometry XV: Techniques and Analysis; 779018 (2010) https://doi.org/10.1117/12.860072
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

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.

Citation Download Citation

Ileana Guízar-Iturbide, Luis Gerardo de la Fraga, Ponciano Rodríguez-Montero, and Svetlana Mansurova "Adaptive photodetector versus conventional method for localization of the Talbot self-images", Proc. SPIE 7790, Interferometry XV: Techniques and Analysis, 779018 (2 August 2010); https://doi.org/10.1117/12.860072

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