Simultaneous dual-band ultra-high resolution optical coherence tomography

Simultaneous dual-band ultra-high resolution optical coherence tomography

Ultra-high resolution optical coherence tomography (OCT) imaging is demonstrated simultaneously at 840 nm and 1230 nm central wavelength using an off-the-shelf turn-key supercontinuum light source. Spectral filtering of the light source emission results in a double peak spectrum with average powers...

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Veröffentlicht in:Optics express 2007-08, Vol.15 (17), p.10832-10841
Hauptverfasser: Spöler, Felix, Kray, Stefan, Grychtol, Patrik, Hermes, Barbara, Bornemann, Jörg, Först, Michael, Kurz, Heinrich
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container_end_page 10841
container_issue 17
container_start_page 10832
container_title Optics express
container_volume 15
creator Spöler, Felix
Kray, Stefan
Grychtol, Patrik
Hermes, Barbara
Bornemann, Jörg
Först, Michael
Kurz, Heinrich
description Ultra-high resolution optical coherence tomography (OCT) imaging is demonstrated simultaneously at 840 nm and 1230 nm central wavelength using an off-the-shelf turn-key supercontinuum light source. Spectral filtering of the light source emission results in a double peak spectrum with average powers exceeding 100 mW and bandwidths exceeding 200 nm for each wavelength band. A free-space OCT setup optimized to support both wavelengths in parallel is introduced. OCT imaging of biological tissue ex vivo and in vivo is demonstrated with axial resolutions measured to be < 2 mum and < 4 mum at 840 nm and 1230 nm, respectively. This measuring scheme is used to extract spectroscopic features with outstanding spatial resolution enabling enhanced image contrast.
doi_str_mv 10.1364/OE.15.010832
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title Simultaneous dual-band ultra-high resolution optical coherence tomography
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