Wax, Adam and Yang, Changhuei and Izatt, Joseph A. (2003) Fourier-domain low-coherence interferometry for light-scattering spectroscopy. Optics Letters, 28 (14). pp. 1230-1232. ISSN 0146-9592 http://resolver.caltech.edu/CaltechAUTHORS:WAXol03
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We present a novel method for obtaining depth-resolved spectra for determining scatterer size through elastic- scattering properties. Depth resolution is achieved with a white-light source in a Michelson interferometer with the mixed signal and reference fields dispersed by a spectrograph. The spectrum is Fourier transformed to yield the axial spatial cross correlation between the signal and reference fields with near 1 m m depth resolution. Spectral information is obtained by windowing to yield the scattering amplitude as a function of wave number. The technique is demonstrated by determination of the size of polystyrene microspheres in a subsurface layer with subwavelength accuracy. Application of the technique to probing the size of cell nuclei in living epithelial tissues is discussed.
|Additional Information:||© 2003 Optical Society of America Received February 10, 2003|
|Subject Keywords:||Optical coherence tomography; Backscattering; Interferometry|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||31 May 2006|
|Last Modified:||26 Dec 2012 08:53|
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