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Optics Letters

Optics Letters


  • 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)

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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

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

E. N. Ribak, M. Gai, D. Loreggia, and S. G. Lipson, "Simple beam combination for stellar interferometry," Opt. Lett. 32, 1075-1077 (2007)

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