Separating the scattering and absorption coefficients using the real and imaginary parts of the refractive index with low-coherence interferometry
Optics Letters, Vol. 35, Issue 17, pp. 2843-2845 (2010)
http://dx.doi.org/10.1364/OL.35.002843
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Abstract
We present an analytical method that yields the real and imaginary parts of the refractive index (RI) from low- coherence interferometry measurements, leading to the separation of the scattering and absorption coefficients of turbid samples. The imaginary RI is measured using time-frequency analysis, with the real part obtained by analyzing the nonlinear phase induced by a sample. A derivation relating the real part of the RI to the nonlinear phase term of the signal is presented, along with measurements from scattering and nonscattering samples that exhibit absorption due to hemoglobin.
© 2010 Optical Society of America
OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(260.2030) Physical optics : Dispersion
(300.1030) Spectroscopy : Absorption
ToC Category:
Physical Optics
History
Original Manuscript: April 20, 2010
Revised Manuscript: June 28, 2010
Manuscript Accepted: July 19, 2010
Published: August 17, 2010
Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics
Citation
Francisco E. Robles and Adam Wax, "Separating the scattering and absorption coefficients using the real and imaginary parts of the refractive index with low-coherence interferometry," Opt. Lett. 35, 2843-2845 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-17-2843
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