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Proceedings Paper

Homodyne detection for Lippmann data storage
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Paper Abstract

In Lippmann photography, the interference of the image with its reflection onto a mirror in contact with the photographic emulsion allows, for each pixel of the image, the recording of Bragg gratings. Removing the mirror, processing the plate and reading out these Bragg gratings with a white light source diffracts the very colours used for recording and thus reproduces the images in colours. Using Lippmann photography as a data storage technique was proposed in the 1960th: for a given pixel, and to each recording wavelength is associated one bit of data, several bits being recorded at the same pixel. In this paper, we revisit this data storage technique and we propose and demonstrate an homodyne detection to improve the efficiency of Lippmann data storages. The proposed homodyne geometry also presents the advantage to simplify the architecture: the Lippmann mirror required for recording is kept in place for data retrieving. Such an homodyne readout could also be applied to enhance the detected signals in other holographic approaches.

Paper Details

Date Published: 18 July 2007
PDF: 7 pages
Proc. SPIE 6620, Optical Data Storage 2007, 66200F (18 July 2007); doi: 10.1117/12.738655
Show Author Affiliations
Gilles Pauliat, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Guillaume Maire, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Carole Arnaud, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Frédéric Guattari, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Kevin Contreras, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Gérald Roosen, Lab. Charles Fabry de l'Institut d'Optique, Univ. Paris-Sud, CNRS (France)
Safi Jradi, CNRS, Univ. de Haute Alsace (France)
Christiane Carré, FOTON, GET-ENST, Bretagne, UMR CNRS (France)


Published in SPIE Proceedings Vol. 6620:
Optical Data Storage 2007

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