Photorefractive optical recycling for contrast enhancement

Authors
Heebner, JE Boyd, RW
Citation
Je. Heebner et Rw. Boyd, Photorefractive optical recycling for contrast enhancement, OPT COMMUN, 182(1-3), 2000, pp. 243-247
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
182
Issue
1-3
Year of publication
2000
Pages
243 - 247
Database
ISI
SICI code
0030-4018(20000801)182:1-3<243:PORFCE>2.0.ZU;2-5
Abstract
Optical processing via high-pass filtering is a well-established means of e nhancing image contrast. However, this procedure is energetically inefficie nt, because the power associated with the low-spatial-frequency components of the image is ordinarily discarded. We demonstrate a means of performing contrast enhancement in an energy efficient manner, by recycling the optica l power ordinarily discarded using photorefractive two-beam coupling in bar ium titanate. (C) 2000 Elsevier Science B.V. All rights reserved.