A broadband LED source in visible to short-wave-infrared wavelengths for spectral tumor diagnostics

作者：Hayashi Daiyu; van Dongen Anne Marie; Boerekamp Jack; Spoor Sandra; Lucassen Gerald; Schleipen Jean

来源：Applied Physics Letters, 2017, 110(23): 233701.

DOI：10.1063/1.4985015

<jats:p>Various tumor types exhibit the spectral fingerprints in the absorption and reflection spectra in visible and especially in near- to short-wave-infrared wavelength ranges. For the purpose of spectral tumor diagnostics by means of diffuse reflectance spectroscopy, we developed a broadband light emitting diode (LED) source consisting of a blue LED for optical excitation, Lu3Al5O12:Ce3+,Cr3+ luminescent garnet for visible to near infrared emissions, and Bismuth doped GeO2 luminescent glass for near-infrared to short-wave infrared emissions. It emits broad-band light emissions continuously in 470–1600 nm with a spectral gap at 900–1000 nm. In comparison to the currently available broadband light sources like halogen lamps, high-pressure discharge lamps and super continuum lasers, the light sources of this paper has significant advantages for spectral tissue diagnostics in high-spectral stability, improved light coupling to optical fibers, potential in low light source cost and enabling battery-drive.</jats:p>

• 出版日期2017-6-5