Fast silicon photomultiplier improves signal harvesting and reduces complexity in time-domain diffuse optics
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Inclou dades d'ús des de 2022
Cita com:
hdl:2117/76500
Tipus de documentArticle
Data publicació2015-06-01
EditorOSA
Condicions d'accésAccés obert
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Abstract
We present a proof of concept prototype of a time-domain
diffuse optics probe exploiting a fast Silicon PhotoMultiplier (SiPM),
featuring a timing resolution better than 80 ps, a fast tail with just 90 ps
decay time-constant and a wide active area of 1 mm2
. The detector is hosted
into the probe and used in direct contact with the sample under
investigation, thus providing high harvesting efficiency by exploiting the
whole SiPM numerical aperture and also reducing complexity by avoiding
the use of cumbersome fiber bundles. Our tests also demonstrate high
accuracy and linearity in retrieving the optical properties and suitable
contrast and depth sensitivity for detecting localized inhomogeneities. In
addition to a strong improvement in both instrumentation cost and size with
respect to legacy solutions, the setup performances are comparable to those
of state-of-the-art time-domain instrumentation, thus opening a new way to
compact, low-cost and high-performance time-resolved devices for diffuse
optical imaging and spectroscopy.
ISSN1094-4087
Versió de l'editorhttps://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-11-13937
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oe-23-11-13937.pdf | 3,055Mb | Visualitza/Obre |