Paper
19 February 2010 High-speed spectral domain polarization-sensitive OCT using a single InGaAs line-scan camera and an optical switch
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Abstract
We demonstrated high-speed spectral domain polarization-sensitive optical coherence tomography (SD-PSOCT) using a single InGaAs line-scan camera and an optical switch at 1.3-μm region. The polarization-sensitive low coherence interferometer in the system was based on the original free-space PS-OCT system published by Hee et al. The horizontal and vertical polarization light rays split by polarization beam splitter were delivered and detected via an optical switch to a single spectrometer by turns instead of dual spectrometers. The SD-PSOCT system had an axial resolution of 8.2 μm, a sensitivity of 101.5 dB, and an acquisition speed of 23,496 Alines/s. We obtained the intensity, phase retardation, and fast axis orientation images of a biological tissue. In addition, we calculated the averaged axial profiles of the phase retardation in human skin.
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Sang-Won Lee, Hyun-Woo Jeong, and Beop-Min Kim "High-speed spectral domain polarization-sensitive OCT using a single InGaAs line-scan camera and an optical switch", Proc. SPIE 7554, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV, 75541Q (19 February 2010); https://doi.org/10.1117/12.843148
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KEYWORDS
Cameras

Optical switching

Line scan image sensors

Spectroscopy

Indium gallium arsenide

Optical coherence tomography

Polarization

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