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Proceedings Paper

A compact, multi-wavelength, and high frequency response light source for diffuse optical spectroscopy and imaging
Author(s): Kyoungsu Park; Minseok Lee; Seung-ha Lee; Albert E. Cerussi; Phil-sang Chung; Sehwan Kim
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Paper Abstract

Many biomedical applications require an efficient combination and localization of multiple discrete light sources. In this paper, we present a compact six-channel combiner of optical sub-assembly type that couples the output of independent solid-state light sources into a single 400 μm diameter optical fiber. It is equipped with six discrete laser diodes, 658, 690, 705, 785, 830, and 850 nm for the measurement of the tissue optical properties from optical spectroscopy and imaging. We demonstrate coupling efficiencies ≥ 77% and output optical power ≥ 20 mW for each of the 6 laser diodes installed into the prototype. The design supports the use of continuous wave and intensity modulated laser diodes (with bandwidth ≥ 3 GHz). The developed light source could be used to construct custom multi-wavelength sources for tissue oximeters, diffuse optical imaging, and molecular imaging technologies.

Paper Details

Date Published: 5 March 2015
PDF: 5 pages
Proc. SPIE 9319, Optical Tomography and Spectroscopy of Tissue XI, 931913 (5 March 2015); doi: 10.1117/12.2077901
Show Author Affiliations
Kyoungsu Park, Dankook Univ. (Korea, Republic of)
Beckman Laser Institute Korea (Korea, Republic of)
Minseok Lee, Dankook Univ. (Korea, Republic of)
Beckman Laser Institute Korea (Korea, Republic of)
Seung-ha Lee, Dankook Univ. (Korea, Republic of)
Beckman Laser Institute Korea (Korea, Republic of)
Albert E. Cerussi, Beckman Laser Institute, Univ. of California, Irvine (United States)
Phil-sang Chung, Dankook Univ. (Korea, Republic of)
Sehwan Kim, Dankook Univ. (Korea, Republic of)
Beckman Laser Institute, Univ. of California, Irvine (United States)
Beckman Laser Institute Korea (Korea, Republic of)


Published in SPIE Proceedings Vol. 9319:
Optical Tomography and Spectroscopy of Tissue XI
Bruce J. Tromberg; Arjun G. Yodh; Eva Marie Sevick-Muraca; Robert R. Alfano, Editor(s)

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