Atmospheric Noise on the Bispectrum in Optical Speckle Interferometry

Karbelkar, SN and Nityananda, Rajaram (1987) Atmospheric Noise on the Bispectrum in Optical Speckle Interferometry. In: Journal of Astrophysics & Astronomy, 8 (3-4). 271 -274.

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Abstract

Based on a simple picture of speckle phenomena in optical interferometry it is shown that the recent signal-to-noise ratio estimate for the so called bispectrum, due to Wirnitzer (1985), does not possess the right limit when photon statistics is unimportant. In this wave-limit, which is true for bright sources, his calculations over-estimate the signal-to-noise ratio for the bispectrum by a factor of the order of the square root of the number of speckles.

Item Type:	Journal Article
Publication:	Journal of Astrophysics & Astronomy
Publisher:	Indian Academy of Sciences
Additional Information:	copy right of this article belongs to Indian Academy of Sciences.
Keywords:	speckle interferometry—bispectrum—signal-to-noise ratio.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	17 Jun 2009 10:52
Last Modified:	19 Sep 2010 05:34
URI:	http://eprints.iisc.ac.in/id/eprint/20696

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