Photorefractive optical recycling for contrast enhancement
نویسندگان
چکیده
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. q 2000 Elsevier Science B.V. All rights reserved. PACS: 42.65.Hw; 42.30.Va; 42.79.Ls
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تاریخ انتشار 2000