Open AccessCrucial aspects for the use of silicon photomultiplier devices in continuous wave functional near-infrared spectroscopy
Author(s) -
Giovanni Maira,
M. Mazzillo,
Sebania Libertino,
Giorgio Fallica,
S. Lombardo
Publication year - 2018
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.9.004679
Subject(s) - silicon photomultiplier , functional near infrared spectroscopy , photomultiplier , spectroscopy , optics , near infrared spectroscopy , optoelectronics , infrared , materials science , physics , detector , scintillator , medicine , cognition , quantum mechanics , psychiatry , prefrontal cortex
In this work, we investigate some major issues for the use of silicon photomultiplier (SiPM) devices in continuous wave functional near-infrared spectroscopy (CW fNIRS). We analyzed the after-pulsing effect, proposing the physical mechanism causing it, and determining its relevance for CW fNIRS. We studied the SiPM transients occurring as the SiPM device goes from the dark (LED in off state) to the illumination (LED in on state) conditions, and vice-versa. Finally, we studied the SiPM SNR in standard CW fNIRS operation.