Open AccessMid-infrared multispectral tissue imaging using a chalcogenide fiber supercontinuum source
Author(s) -
Christian Petersen,
N. Prtljaga,
M.C. Farries,
Jon Ward,
Bruce Napier,
Gavin R. Lloyd,
Jayakrupakar Nallala,
Nicholas Stone,
Ole Bang
Publication year - 2018
Publication title -
optics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.43.000999
Subject(s) - supercontinuum , optics , materials science , multispectral image , photonic crystal fiber , chalcogenide , wavelength , infrared , optoelectronics , physics , computer science , computer vision
We present, to the best of our knowledge, the first demonstration of mid-infrared supercontinuum (SC) tissue imaging at wavelengths beyond 5 μm using a fiber-coupled SC source spanning 2-7.5 μm. The SC was generated in a tapered large-mode-area chalcogenide photonic crystal fiber in order to obtain broad bandwidth, high average power, and single-mode output for diffraction-limited imaging performance. Tissue imaging was demonstrated in transmission at selected wavelengths between 5.7 (1754 cm -1 ) and 7.3 μm (1370 cm -1 ) by point scanning over a sub-millimeter region of colon tissue, and the results were compared to images obtained from a commercial instrument.
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