Abstract
The angular selectivity of volume diffraction gratings is exploited to form a spatial-frequency filter. The filter is recorded in a thick recording medium as a superposition of several simple gratings or as a single grating with a modulation that varies in depth. Such a device can have controlled angular selectivity so as to alter the relative amplitude and phase of selected spatial-frequency components. A coupled-wave formalism is used to analyze the angular selectivity of this device and experimental results demonstrate its usefulness in improving motion-blurred images.
© 1980 Optical Society of America
Full Article | PDF ArticleMore Like This
D. Peri and A. A. Friesem
Opt. Lett. 3(4) 124-126 (1978)
Yuichi Ninomiya
J. Opt. Soc. Am. 63(9) 1124-1130 (1973)
Bahaa E. A. Saleh and Wayne C. Goeke
J. Opt. Soc. Am. 70(5) 506-515 (1980)