High framerate, InGaAs camera for interferometric diffuse correlation spectroscopy (iDCS) beyond the water peak

Mitchell B. Robinson; Stefan Carp; Adriano Peruch; Nisan Ozana; Maria Franceschini

doi:10.1117/12.2578894

5 March 2021 High framerate, InGaAs camera for interferometric diffuse correlation spectroscopy (iDCS) beyond the water peak

Mitchell B. Robinson, Stefan Carp, Adriano Peruch, Nisan Ozana, Maria Franceschini

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Proceedings Volume 11641, Dynamics and Fluctuations in Biomedical Photonics XVIII; 116410O (2021) https://doi.org/10.1117/12.2578894
Event: SPIE BiOS, 2021, Online Only

Abstract

Diffuse correlation spectroscopy (DCS) is an established diffuse optical technique that uses the analysis of temporal speckle intensity fluctuations to measure blood flow in tissue. Recent advances in the field have seen the introduction of iDWS/iDCS, which have allowed for the use of conventional photodetectors to replace the single photon counting detectors required to measure the traditional, homodyne DCS signal. Here we detail a high framerate, highly parallel iDCS system at 1064 nm which allows for improved signal to noise ratio at extended source detector separations.

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Mitchell B. Robinson, Stefan Carp, Adriano Peruch, Nisan Ozana, and Maria Franceschini "High framerate, InGaAs camera for interferometric diffuse correlation spectroscopy (iDCS) beyond the water peak", Proc. SPIE 11641, Dynamics and Fluctuations in Biomedical Photonics XVIII, 116410O (5 March 2021); https://doi.org/10.1117/12.2578894

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KEYWORDS

Cameras

Indium gallium arsenide

Spectroscopy

Interferometry

Sensors

Blood circulation

Scattering

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