Abstract
3-color coherent anti-Stokes Raman scattering (CARS) can be used to measure the dynamics of vibrationally excited states by controlling the time delay between the broadband and narrowband pulses. It is promising to simultaneously obtain the CARS spectra in time-frequency domains and monitor vibration dephasing times of multiple Raman modes, which is especially favourable in the studies of molecular dynamics, supra-molecular structure, chemistry and material science [1].However, the often present instantaneous nonresonant background (NRB) signal interferes with and typically dominates the much weaker resonant signals, leading to significant reduction [2].
© 2013 IEEE
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