Performance assessment of laser sources for time-domain diffuse correlation spectroscopy.
Journal
Biomedical optics express
ISSN: 2156-7085
Titre abrégé: Biomed Opt Express
Pays: United States
ID NLM: 101540630
Informations de publication
Date de publication:
01 Sep 2021
01 Sep 2021
Historique:
received:
25
05
2021
revised:
26
07
2021
accepted:
27
07
2021
entrez:
25
10
2021
pubmed:
26
10
2021
medline:
26
10
2021
Statut:
epublish
Résumé
Time-domain diffuse correlation spectroscopy (TD-DCS) is an emerging optical technique that enables noninvasive measurement of microvascular blood flow with photon path-length resolution. In TD-DCS, a picosecond pulsed laser with a long coherence length, adequate illumination power, and narrow instrument response function (IRF) is required, and satisfying all these features is challenging. To this purpose, in this study we characterized the performance of three different laser sources for TD-DCS. First, the sources were evaluated based on their emission spectrum and IRF. Then, we compared the signal-to-noise ratio and the sensitivity to velocity changes of scattering particles in a series of phantom measurements. We also compared the results for
Identifiants
pubmed: 34692187
doi: 10.1364/BOE.432363
pii: 432363
pmc: PMC8515963
doi:
Types de publication
Journal Article
Langues
eng
Pagination
5351-5367Informations de copyright
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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