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Refractive index tomography of turbid media by bifocal optical coherence refractometry

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journal contribution
posted on 2003-12-15, 00:00 authored by A Zvyagin, K Dilusha Silva, S Alexandrov, T Hillman, J Armstrong, Takuya Tsuzuki, D Sampson
We demonstrate tomographic imaging of the refractive index of turbid media using bifocal optical coherence refractometry (BOCR). The technique, which is a variant of optical coherence tomography, is based on the measurement of the optical pathlength difference between two foci simultaneously present in a medium of interest. We describe a new method to axially shift the bifocal optical pathlength that avoids the need to physically relocate the objective lens or the sample during an axial scan, and present an experimental realization based on an adaptive liquid-crystal lens. We present experimental results, including video clips, which demonstrate refractive index tomography of a range of turbid liquid phantoms, as well as of human skin in vivo.

History

Journal

Optics express

Volume

11

Issue

25

Pagination

3503 - 3504

Publisher

Optical Society of America

Location

Washington, D.C.

ISSN

1094-4087

Language

eng

Notes

This paper was published in Optics express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-11-25-3503. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2003, Optical Society of America

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