Time-domain diffuse optical spectroscopy is being applied with increasing success to study highly scattering media, mainly in the fields of non-invasive medical diagnostics and quality assessment of food and pharmaceutical products. The region beyond 1100 nm is still largely unexplored by time-domain techniques, probably due to the difficult combination of tunable pulsed sources and suitable single-photon detectors. We extend the spectral range up to 1700 nm thanks to a pulsed supercontinuum laser and a time-gated InGaAs/InP single-photon avalanche diode, with potential applications in medical diagnostics and in the study of scattering materials. A first application on collagen powder is shown.

InGaAs/InP Single Photon Avalanche Diode operated in gated mode for time-resolved diffuse optical spectroscopy up to 1700 nm

BARGIGIA, ILARIA;TOSI, ALBERTO;BAHGAT SHEHATA, ANDREA;DELLA FRERA, ADRIANO;FARINA, ANDREA;BASSI, ANDREA;TARONI, PAOLA;DALLA MORA, ALBERTO;ZAPPA, FRANCO;CUBEDDU, RINALDO;PIFFERI, ANTONIO GIOVANNI
2011

Abstract

Time-domain diffuse optical spectroscopy is being applied with increasing success to study highly scattering media, mainly in the fields of non-invasive medical diagnostics and quality assessment of food and pharmaceutical products. The region beyond 1100 nm is still largely unexplored by time-domain techniques, probably due to the difficult combination of tunable pulsed sources and suitable single-photon detectors. We extend the spectral range up to 1700 nm thanks to a pulsed supercontinuum laser and a time-gated InGaAs/InP single-photon avalanche diode, with potential applications in medical diagnostics and in the study of scattering materials. A first application on collagen powder is shown.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/692230
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