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Updated: Mar 24, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
Published on: September 22, 2017
Scanning, non-contact, hybrid broadband diffuse optical spectroscopy and diffuse correlation spectroscopy system
Johannes D Johansson1, Miguel Mireles1, Jordi Morales-Dalmau1
1ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain.
Abstract:
A scanning system for small animal imaging using non-contact, hybrid broadband diffuse optical spectroscopy (ncDOS) and diffuse correlation spectroscopy (ncDCS) is presented. The ncDOS uses a two-dimensional spectrophotometer retrieving broadband (610-900 nm) spectral information from up to fifty-seven source-detector distances between 2 and 5 mm. The ncDCS data is simultaneously acquired from four source-detector pairs. The sample is scanned in two dimensions while tracking variations in height. The system has been validated with liquid phantoms, demonstrated in vivo on a human fingertip during an arm cuff occlusion and on a group of mice with xenoimplanted renal cell carcinoma.
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