REAL-TIME PHOTOREFRACTIVE INTERFEROMETER FOR DYNAMIC PHASE PERTURBATION BY SELF-INTERFERENCE IN LINBO3

We propose a simple real-time system and demonstrate its use for measu ring dynamic optical phase perturbation. In this system we used a 0.1- wt.% Fe:LiNbO3 to record the self-interference grating with incident l ight. The system is a new kind of real-time holographic interferometer . After rise time in the interferometer, the speed for showing the fri nges is as fast as that of dynamic phase perturbations. Characteristic s of the interferometer are proposed and examined. (C) 1997 Optical So ciety of America.