We propose a simple real-time system and demonstrate its use for measuring
dynamic optical phase perturbation. In this system we used a 0.1-wt.
% Fe:LiNbO3 to record the self-interference
grating with incident light. The system is a new kind of real-time
holographic interferometer. After rise time in the interferometer, the speed
for showing the fringes is as fast as that of dynamic phase perturbations.
Characteristics of the interferometer are proposed and examined.
© 1997 Optical Society of America
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