High speed 3-D imaging using photorefractive holography with novel low coherence interferometers

Summary form only given. Photorefractive holography is a whole-field coherence-gating technique for 3-D imaging, including through turbid media, that offers a unique mechanism to discriminate against a background of diffuse light. In contrast to confocal scanning techniques such as optical coherence tomography, it does not need transversal scan and so may be implemented at very high frame rates and may utilize light sources of almost arbitrary spatial coherence, including low-cost LED´s and broad stripe multi-mode diode lasers. We demonstrate photorefractive holography with diverse alternative sources to the modelocked laser and discuss design considerations for the different imaging configurations. Photorefractive holography can exploit high power LEDs.