Homodyne and heterodyne imaging through a scattering medium

Citation
J. Khoury et al., Homodyne and heterodyne imaging through a scattering medium, OPTICS LETT, 26(18), 2001, pp. 1433-1435
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS LETTERS
ISSN journal
01469592 → ACNP
Volume
26
Issue
18
Year of publication
2001
Pages
1433 - 1435
Database
ISI
SICI code
0146-9592(20010915)26:18<1433:HAHITA>2.0.ZU;2-T
Abstract
We introduce a novel two-dimensional (2D) homodyne and heterodyne technique for imaging objects through or embedded in a scattering medium. Our imagin g approach is based on heterodyning of light with different Doppler broaden ings that is scattered from objects of two different textures or from an op aque object and a textured scattering medium. We report on the initial demo nstration of pulling signals out of noise for an object hidden behind a sca ttering medium. Enhancements of signal-to-noise ratio of the order of 50 ha ve been achieved by use of a 2D holographic phase-sensitive detector. We al so discuss the experimental feasibility of this approach for objects embedd ed in a scattering medium. (C) 2001 Optical Society of America.