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We propose and demonstrate what is to our knowledge a novel technique of improving the spatial resolution of an optical coherence tomography (OCT) system given a non-Gaussian light source spectrum. By using dispersive materials in the reference arm of the OCT system, the resultant dispersion variation led to a full-width at half maximum (FWHM) of the(More)
By comparing the results of polarization-dependent, time-resolved intensity profiles of photons transmitted through diluted milk, chicken breast tissue, and chopped chicken breast tissue, we found that the inherent anisotropic optical property of skeletal muscle tissue resulted in coherent coupling between two mutually perpendicular polarization directions.(More)
A polarization-sensitive optical coherence tomography (PSOCT) system using a femtosecond-laser as the broadband light source is implemented with the axial resolution of 5 microm in free space. Through the design of path-length difference between the two polarization inputs and the modulation of one of the polarization inputs, the PSOCT images of various(More)
A prototype of a profilometer was built with the technique of composite interferometry for measurement of the distribution of both the amplitude and phase information of the surface of a material simultaneously. The composite interferometer was composed of a Michelson interferometer for measuring the surface profile of the sample and a Mach-Zehnder(More)
We proposed and demonstrated a fiber-based composite interferometer, which can perform surface profile measurements with sensitivity at the nanometer scale. With the proposed phase-compensation mechanism, the phase deviation due to the instability of the optical delay component and environmental perturbations can be simultaneously compensated. The(More)
The application of optical absorption spectra in prognostic prediction has hardly been investigated. We developed and evaluated a novel two dimensional absorption spectrum measurement system (TDAS) for use in early diagnosis, evaluating response to chemoradiation, and making prognostic prediction. The absorption spectra of 120 sets of normal and tumor(More)
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