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Proceedings Paper

Stellar interferometry in photon-counting regime: experiment on a laboratory prototype
Author(s): Emmanuel Longueteau; Laurent Delage; Francois Reynaud
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Paper Abstract

We report on the experimental validation of the photon noise correction applied on interferometric data, in the frame of an imaging laboratory test using the end-to-end demonstrator "Optical Aperture Synthesis Technologies 2". The light flux is scaled to astronomy level to achieve a quantitative comparison between the contrasts and phase closure measurements simultaneously measured in photon counting regime and in high flux level regime. This experiment uses a three-telescope array linked by optical fiber to the mixing station. We show that it is possible to correct properly the interferometric data with light power levels reaching 1 femto-Watt at a 680 nm mean wavelength. This corresponds to a photon flux close to 2.5 photons per millisecond and to 25 photons for each snap shot.

Paper Details

Date Published: 21 February 2003
PDF: 7 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.457130
Show Author Affiliations
Emmanuel Longueteau, IRCOM/Univ. de Limoges (France)
Laurent Delage, IRCOM/Univ. de Limoges (France)
Francois Reynaud, IRCOM/Univ. de Limoges (France)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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