We present a new full-custom instrument for time-domain diffuse optical spectroscopy developed within Horizon 2020 LUCA (Laser and Ultrasound Co-Analyzer for thyroid nodules) project. It features eight different picosecond diode lasers (in the 635 - 1050 nm range), two 1.3 x 1.3 mm(2) active-area SiPMs (Silicon PhotoMultipliers) working in single-photon mode and two 10 ps resolution time-to-digital converters. A custom FPGA-based control board manages the instrument and communicates with an external computer via USB connection. The instrument proved state-of-the-art performance: an instrument response function narrower than 160 ps (fullwidth at half-maximum), a long-term measurement stability better than 1%, and an output average optical power higher than 1 mW at 40 MHz. The instrument has been validated with phantom measurements.

Multi-wavelength dual-detection channel system for time-resolved near-infrared spectroscopy

Marco Renna;Mauro Buttafava;Anurag Behera;Marta Zanoletti;Laura Di Sieno;Alberto Dalla Mora;Davide Contini;Alberto Tosi
2019-01-01

Abstract

We present a new full-custom instrument for time-domain diffuse optical spectroscopy developed within Horizon 2020 LUCA (Laser and Ultrasound Co-Analyzer for thyroid nodules) project. It features eight different picosecond diode lasers (in the 635 - 1050 nm range), two 1.3 x 1.3 mm(2) active-area SiPMs (Silicon PhotoMultipliers) working in single-photon mode and two 10 ps resolution time-to-digital converters. A custom FPGA-based control board manages the instrument and communicates with an external computer via USB connection. The instrument proved state-of-the-art performance: an instrument response function narrower than 160 ps (fullwidth at half-maximum), a long-term measurement stability better than 1%, and an output average optical power higher than 1 mW at 40 MHz. The instrument has been validated with phantom measurements.
2019
Optical Tomography and Spectroscopy of Tissue XIII
9781510623903
9781510623910
sezele
Diffuse optics; near-infrared spectroscopy; pulsed laser; single-photon detector; time-resolved; time-correlated single-photon counting; time-to-digital converter
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1121487
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