Abstract
Customised photorefractive quantum well devices have been developed for real-time video acquisition of coherence-gated, three-dimensional images. Holographic imaging with direct video capture has been demonstrated. The technique has been applied to 3-D imaging through turbid media with 50 mm transverse and 60 mm depth resolution being achieved using near infrared light through a phantom of 13 mean free paths scattering depth. Spectrally-resolved holographic imaging has also been demonstrated.
Highlights
Fast recyclable holographic media have a wide range of real time applications such as interferometry, image correlation and 3-D imaging, including imaging through turbid media, such as biological tissue, via coherence gating e.g. [1,2]
The technique has been applied to 3-D imaging through turbid media with 50 μm transverse and 60 μm depth resolution being achieved using near infrared light through a phantom of 13 mean free paths scattering depth
Photorefractive multiple quantum well (MQW) devices satisfy many of the requirements needed for such recording media, such as high sensitivities [3] and very fast response times [4]
Summary
Fast recyclable holographic media have a wide range of real time applications such as interferometry, image correlation and 3-D imaging, including imaging through turbid media, such as biological tissue, via coherence gating e.g. [1,2]. R. Melloch, “Direct-To-Video Holographic Readout In Multiple Quantum Wells For Three-Dimensional Imaging Through Turbid Media,” Opt. Lett. The individual depth-resolved images may be seen in Video 2 which shows the various layers of the 3-D test object as it was scanned through the holographic recording reference plane corresponding to matched pathlengths for the object and image beams.
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