Holographic imaging using the phase coherent photorefractive effect in ZnSe quantum wells

Kabir, A.; Ajward, A. M.; Wagner, H. P.
August 2008
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p063504
Academic Journal
We demonstrate wide-field real-time, and depth-resolved holographic imaging of various reflecting objects using the all-optical phase coherent photorefractive effect in ZnSe quantum wells. In contrast to current photorefractive quantum well devices, these devices use the coherence of excitons as a basis for holography. This has the advantage that the entire depth-resolved information of the object can be obtained from the brightness profile of the holographic image with a resolution of a few micrometers. In addition, the high diffraction efficiency and short refresh time of the phase coherent photorefractive effect allow high-speed video acquisition of moving objects.


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