In this contribution, we present a photorefractive lithium-niobate novelty filter microscope. We derive conditions, based on the photorefractive model by Kukhtarev et al. [1], for simulating the two-beam coupling functionality in a lithium-niobate crystal. We verify them experimentally by measuring phase changes due to the mixing of equally transparent fluids in a micro-channel using this novelty filter microscope.

© 2005 Optical Society of America

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