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Direct measurement of phase of foreward-scattered light using polarization heterodyne interferometer

Chandan, Ganesh G and Vasu, Ram M and Asokan, S (2001) Direct measurement of phase of foreward-scattered light using polarization heterodyne interferometer. In: Proc. SPIE, 4596 (280).

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Abstract

We describe direct measurement of phase of ballistic photons transmitted through objects hidden in a turbid medium using a polarization interferometer employing a rotating analyzer. The unwrapped phase difference measurements from interferometry was possible for medium levels of turbidity and accurate phase measurement from the sinusoidal intensity was not detectable when l/l* is increased beyond 4.3. The measured phase on reconstruction using standard tomographic algorithms resulted in the recovery of the refractive index profile of the object hidden in the turbid medium.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The International Society for Optical Engineering.
Department/Centre: Others
Date Deposited: 02 Aug 2011 06:58
Last Modified: 02 Aug 2011 06:58
URI: http://eprints.iisc.ernet.in/id/eprint/39528

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