Photorefractive optical recycling for contrast enhancement

被引：5
|
作者：
Heebner, JE [1 ]
Boyd, RW [1 ]
机构：
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源：
OPTICS COMMUNICATIONS | 2000年 / 182卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
photorefractive effect; two-beam coupling; image processing; contrast enhancement; phase contrast; image amplification;
D O I：
10.1016/S0030-4018(00)00774-4
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical processing via high-pass filtering is a well-established means of enhancing image contrast. However, this procedure is energetically inefficient, 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 optical power ordinarily discarded using photorefractive two-beam coupling in barium titanate. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：243 / 247
页数：5
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