Novel approaches to broadband coherent Raman imaging

Autor: Federico Vernuccio, Alejandro De la Cadena, Giulio Cerullo, Carlo Michele Valensise, Dario Polli
Rok vydání: 2021
Předmět:
Zdroj: Advanced Chemical Microscopy for Life Science and Translational Medicine 2021.
DOI: 10.1117/12.2578587
Popis: We present innovative approaches to broadband coherent Raman scattering microscopy, both in the stimulated Raman scattering (SRS) and broadband coherent anti-Stokes Raman scattering (CARS) modalities. A convolutional neural network removes the unwanted non-resonant background from broadband CARS spectra. The deep-learning model processes experimental data in 100microseconds and correctly retrieves all the relevant vibrational peaks without any user intervention or independent background measurement. A multi-channel lock-in amplifier, in combination with in-line balanced detection and a broadband optical parametric oscillator, allows sensitive measurement of the SRS spectrum at 32 frequencies in parallel, with pixel dwell times as short as 40 microseconds.
Databáze: OpenAIRE