Abstract
We present a new microscopy system for imaging in turbid media that is
based on the spatial coherence gate principle and generates in parallel a
complete two-dimensional head-on image without scanning. This system has been
implemented in a commercial microscope and preserves the lateral resolution
of the optics used. With a spatially incoherent source, speckle-free images
with diffraction-limited resolution are recorded at successive depths with
shot-noise-limited detection. The setup comprises a photoelastic modulator
for path difference modulation and a two-dimensional CCD array and uses a
multiplexed lock-in detection scheme.
© 1998 Optical Society of America
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