Ultrahigh-resolution optical coherence tomography at 1.15 μm using photonic crystal fiber with no zero-dispersion wavelengths

Articles:

Title:: Ultrahigh-resolution optical coherence tomography at 1.15 μm using photonic crystal fiber with no zero-dispersion wavelengths
Author(s):: Wang, Hui
Fleming, Christine P.
Rollins, Andrew M.
Date:: 2007
Type:: Articles
Department:: Electrical Engineering
Volume:: 15
Permanent URL:: http://hdl.handle.net/10022/AC:P:14905
Book/Journal Title:: Optics Express
Abstract:: We report a broad-band continuum light source with high power, low noise and a smooth spectrum centered at 1.15 μm for ultrahigh-resolution optical coherence tomography (OCT). The continuum is generated by self-phase modulation using a compact 1.059 μm femtosecond laser pumping a novel photonic crystal fiber, which has a convex dispersion profile with no zero dispersion wavelengths. The emission spectrum is red-shifted from the pump wavelength, ranges from 800 to 1300 nm and results in a measured axial resolution of ~2.8 μm in air. We demonstrate ultrahigh-resolution OCT imaging of biological tissue using this light source. The results suggest PCF with this type of dispersion profile is advantageous for generating SC as a light source for ultrahigh-resolution OCT.
Subject(s):: Optics
DOI:: http://dx.doi.org/10.1364/OE.15.003085