'Viewing' objects hidden in highly scattering media by cross-correlating the Fourier transform of the image with the incident field in a second-ordernon-linear crystal

Authors
Andreoni, A Bondani, M Pontenza, MAC Villani, F
Citation
A. Andreoni et al., 'Viewing' objects hidden in highly scattering media by cross-correlating the Fourier transform of the image with the incident field in a second-ordernon-linear crystal, OPT COMMUN, 174(5-6), 2000, pp. 487-497
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
174
Issue
5-6
Year of publication
2000
Pages
487 - 497
Database
ISI
SICI code
0030-4018(20000201)174:5-6<487:'OHIHS>2.0.ZU;2-3
Abstract
The detectability of the image of an object immersed in a scattering medium and transilluminated by a multi-mode laser pulse can be enhanced by cross- correlating the transmitted field with a fraction of the incident one in a beta-barium berate crystal. We show that this effect arises from the interp lay of the temporal coherence properties of the interacting fields, even in the presence of a modest coherence such as that of a Q-switched Nd:YAG las er pulse. (C) 2000 Published by Elsevier Science B.V. All rights reserved.