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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 9 — May. 1, 2007
  • pp: 1075–1077

Simple beam combination for stellar interferometry

E. N. Ribak, M. Gai, D. Loreggia, and S. G. Lipson  »View Author Affiliations


Optics Letters, Vol. 32, Issue 9, pp. 1075-1077 (2007)
http://dx.doi.org/10.1364/OL.32.001075


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Abstract

In stellar interferometry, image quality improves significantly with the inclusion of more telescopes and the use of phase closure. We demonstrate, using first coherent and then partially coherent white light, a compact and efficient pairwise combination of 12 or more beams. The input beams are lined up and spread through a cylindrical lens into a comb of parallel ellipses, which interferes with a perpendicular copy of itself to form a matrix of interferograms between all pairs. The diagonal elements show interference of each beam with itself, for intensity calibration. The measured white-light visibilities were high and stable.

© 2007 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(110.4980) Imaging systems : Partial coherence in imaging
(350.1260) Other areas of optics : Astronomical optics
(350.1370) Other areas of optics : Berry's phase

ToC Category:
Imaging Systems

History
Original Manuscript: January 16, 2007
Manuscript Accepted: February 7, 2007
Published: April 3, 2007

Citation
E. N. Ribak, M. Gai, D. Loreggia, and S. G. Lipson, "Simple beam combination for stellar interferometry," Opt. Lett. 32, 1075-1077 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-9-1075


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