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Coherent anti-Stokes Raman scattering (CARS) is a highly effective Non-Linear Optical (NLO) microscopy technique for label-free vibrational imaging of unperturbed samples. We present a novel scheme for video-rate wide-field CARS microscopy over a wide (up to 100-μm diameter) field of view, based on an Ytterbium amplified laser followed by white-light generation and optical parametric amplification. It records the full fingerprint region of the molecular vibrational spectrum and enables chemically-specific real-time characterization of fast dynamics with down to few-milliseconds time resolution. The system can perform either real-time imaging at single Raman shifts or acquire three-dimensional hypercubes, chemically richer in information.
Ceconello et al. (Tue,) studied this question.
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