Techniques to differentiate between materials are a powerful addition to the structural information traditionally available from optical coherence tomography images. We present label-free detection of water and lipid at a micrometer scale by evaluating their unique dispersion properties. Using a tri-band swept source configuration, we measure both β2 and β3 and show how to identify the two materials at sample thicknesses of 40 and 90 μm, respectively.
© 2013 Optical Society of America
Original Manuscript: May 20, 2013
Revised Manuscript: July 9, 2013
Manuscript Accepted: July 15, 2013
Published: August 7, 2013
Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics
Norman Lippok, Stuart G. Murdoch, Kun-Lin Wu, and Frédérique Vanholsbeeck, "Dispersion mapping at the micrometer scale using tri-band optical frequency domain imaging," Opt. Lett. 38, 3028-3031 (2013)