Title :
Linear spatial filtering with crossed ultrasonic light modulators
Author :
Stark, H. ; King, Matthew ; Arm, M.
Abstract :
A new technique is described for realizing the optimum filter for spatial filtering in coherent optical systems. By employing two crossed ultrasonic modulators, this technique overcomes the inherent lack of adaptability of filters realized with photographic transparencies.
Keywords :
Additive noise; Filtering; Holographic optical components; Holography; Nonlinear filters; Optical films; Optical filters; Optical modulation; Phase modulation; Signal processing;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1969.7306
