A novel interferometric spectrometer obtained by imaging Talbot effect in digital holography

Year: 2004

Authors: Ferraro P., Coppola G., Alfieri D., De Nicola S., Grilli S., Finizio A., Pierattini G.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto di Cibernetica “E. Caianiello” del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto per la Microelettronica e i Microsistemi del CNR, Via P. Castellino 111, 80131 Napoli, Italy

Abstract: We present here the observation of the Talbot effect in digital holography (DH). A self-imaging phenomena is observed by reconstructing the amplitude of the object wavefield by using different distances and different illumination wavelengths. The numerical reconstruction allows to determine the complex field amplitude at different wavelengths while maintaining constant the reconstruction distance. We investigate on the possibility to build a spectrometer based on the Talbot effect. In particular, the spectrometer proposed in this work can cover the whole visible spectrum ranging from 350nm to 750nm and, from the FWHM of the spectrograms with a resolution of about 20nm

Journal/Review: PROCEEDINGS OF SPIE

Volume: 5457      Pages from: 651  to: 659

KeyWords: talbot effect; digital holography;
DOI: 10.1117/12.545284

Citations: 1
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