A phase-stepped holographic system based on an electro-optic modulator has been developed. Subtraction holography is easily realized with our developed holographic system, so optical noise in particle fields is rejected entirely. This greatly improves the signal-to-noise ratio of the particle image and the resolution of the system. Experimental results illustrate such advantages.
© 1996 Optical Society of America
Tianshu Lai and Weizhu Lin, "Effective implementation of subtraction holography for noise suppression in particle fields," Appl. Opt. 35, 4334-4336 (1996)