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Phase-dispersion optical tomography

Yang, Changhuei and Wax, Adam and Dasari, Ramachandra R. and Feld, Michael S. (2001) Phase-dispersion optical tomography. Optics Letters, 26 (10). pp. 686-688. ISSN 0146-9592. http://resolver.caltech.edu/CaltechAUTHORS:YANol01b

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Abstract

We report on phase-dispersion optical tomography, a new imaging technique based on phase measurements using low-coherence interferometry. The technique simultaneously probes the target with fundamental and second-harmonic light and interferometrically measures the relative phase shift of the backscattered light fields. This phase change can arise either from reflection at an interface within a sample or from bulk refraction. We show that this highly sensitive 5 phase technique can complement optical coherence tomography, which measures electric field amplitude, by revealing otherwise undetectable dispersive variations in the sample.


Item Type:Article
Additional Information:© Copyright 2001 Optical Society of America Received October 25, 2000 This work was carried out at the Laser Biomedical Research Center of the Massachusetts Institute of Technology and was supported by National Institutes of Health (NIH) grant P41-RR02594, National Science Foundation grant 9708265-CHE, and a grant from Hamamatsu Corporation. A. Wax was supported by NIH National Research Service Award 1 F32 RR05075-01. We acknowledge helpful comments about the mirrors from Anna Wang and Earl Rudisill of Newport Corporation.
Subject Keywords:Phase shift; Optical coherence tomography; Interference microscopy; Optics at surfaces : Surfaces
Record Number:CaltechAUTHORS:YANol01b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:YANol01b
Alternative URL:http://www.opticsinfobase.org/abstract.cfm?URI=ol-26-10-686
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3324
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 May 2006
Last Modified:26 Dec 2012 08:53

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