Differential phase contrast in optical coherence tomography.
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Differential phase contrast in optical coherence tomography.
Opt Lett. 1999 May 1;24(9):622-4
Authors: Hitzenberger CK, Fercher AF
We report on a modification of optical coherence tomography (OCT) that allows one to measure small phase differences between beams traversing adjacent areas of a specimen. The sample beam of a polarization-sensitive low-coherence interferometer is split by a Wollaston prism into two components that traverse the object along closely spaced paths. After reflection at the various sample surfaces, the beams are recombined at the Wollaston prism. Any phase difference encountered between the two beams is converted into a ...
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