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Resolution improvement in spectral-domain optical coherence tomography based on classical intensity correlations

Tomohiro Shirai and Ari T. Friberg

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Abstract

We describe a resolution-improved spectral-domain (SD) optical coherence tomography (OCT) based on classical intensity correlations as a counterpart of the recently proposed intensity-based time-domain OCT. Similarly to quantum OCT, the setup employs the Hong-Ou-Mandel interferometer at the output of the conventional SD-OCT. It is shown theoretically that a factor-of-2 improvement in axial resolution is obtained with this arrangement. Some unique and useful features of our proposed system are addressed.

© 2013 Optical Society of America

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