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1 March 2019 Multi-wavelength dual-detection channel system for time-resolved near-infrared spectroscopy
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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 × 1.3 mm2 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.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marco Renna, Mauro Buttafava, Anurag Behera, Marta Zanoletti, Laura Di Sieno, Alberto Dalla Mora, Davide Contini, and Alberto Tosi "Multi-wavelength dual-detection channel system for time-resolved near-infrared spectroscopy", Proc. SPIE 10874, Optical Tomography and Spectroscopy of Tissue XIII, 1087408 (1 March 2019); https://doi.org/10.1117/12.2509706
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