title: Time-resolved coherent anti-Stokes Raman scattering with a femtosecond soliton output of a photonic-crystal fiber.
abstract: We demonstrate time-resolved coherent anti-Stokes Raman scattering (CARS) by using a frequency-tunable femtosecond soliton output of a silica photonic-crystal fiber (PCF) as a Stokes field. This approach allows quantum beats originating from two close Raman modes to be resolved in the time-domain CARS response. The nonresonant CARS background is efficiently suppressed by introducing a delay time between the probe pulse and the pump-Stokes pulse dyad, suggesting a convenient fiber-optic format for the Stokes source in time-resolved CARS and allowing sensitivity improvement in PCF-based CARS spectroscopes and microscopes.
authors.affiliation: Department of Physics, International Laser Center, M. V. Lomosov Moscow State University, Vorob'evy gory, Moscow 119992, Russia.
authors.forename: Dmitrii A
authors.initials: DA
authors.lastname: Sidorov-Biryukov
authors.forename: Evgenii E
authors.initials: EE
authors.lastname: Serebryannikov
authors.forename: Aleksei M
authors.initials: AM
authors.lastname: Zheltikov