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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 34 — Dec. 1, 2005
  • pp: 7424–7438

Imaging through turbulence with a quadrature-phase optical interferometer

Brian Kern, Paul E. Dimotakis, Chris Martin, Daniel B. Lang, and Rachel N. Thessin  »View Author Affiliations


Applied Optics, Vol. 44, Issue 34, pp. 7424-7438 (2005)
http://dx.doi.org/10.1364/AO.44.007424


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Abstract

We present an improved technique for imaging through turbulence at visible wavelengths using a rotation shearing pupil-plane interferometer, intended for astronomical and terrestrial imaging applications. While previous astronomical rotation shearing interferometers have made only visibility modulus measurements, this interferometer makes four simultaneous measurements on each interferometric baseline, with phase differences of π/2 between each measurement, allowing complex visibility measurements (modulus and phase) across the entire input pupil in a single exposure. This technique offers excellent wavefront resolution, allowing operation at visible wavelengths on large apertures, is potentially immune to amplitude fluctuations (scintillation), and may offer superior calibration capabilities to other imaging techniques. The interferometer has been tested in the laboratory under weakly aberrating conditions and at Palomar Observatory under ordinary astronomical observing conditions. This research is based partly on observations obtained at the Hale Telescope.

© 2005 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Interferometry

History
Original Manuscript: November 12, 2004
Revised Manuscript: May 21, 2005
Manuscript Accepted: May 24, 2005
Published: December 1, 2005

Citation
Brian Kern, Paul E. Dimotakis, Chris Martin, Daniel B. Lang, and Rachel N. Thessin, "Imaging through turbulence with a quadrature-phase optical interferometer," Appl. Opt. 44, 7424-7438 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-34-7424

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