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Applied Optics

Applied Optics


  • Vol. 29, Iss. 4 — Feb. 1, 1990
  • pp: 516–521

Dispersion in stellar interferometry

William J. Tango  »View Author Affiliations

Applied Optics, Vol. 29, Issue 4, pp. 516-521 (1990)

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The effects of uncompensated dispersion on the fringe visibility in a two beam interferometer are examined for a long baseline stellar interferometer with a path compensator in air rather than in vacuo. We derive a criterion based on the central fringe visibility for evaluating the effects of dispersion and develop a method for selecting suitable compensating media. By limiting the optical bandwidth to ~100 nm and using a compensating system with two glasses it is possible to achieve high fringe visibility in a stellar interferometer with excess air paths of the order of 500 m. The results are generally applicable to other two beam interferometers.

© 1990 Optical Society of America

Original Manuscript: October 5, 1988
Published: February 1, 1990

William J. Tango, "Dispersion in stellar interferometry," Appl. Opt. 29, 516-521 (1990)

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