title: Background-free broadband CARS spectroscopy from a 1-MHz ytterbium laser.
abstract: We introduce a novel configuration for broadband, time-resolved CARS spectroscopy/microscopy in which pump, Stokes and probe pulses are all derived from a single femtosecond Yb:KYW laser. The 1-MHz repetition rate of the system allows very intense CARS signals to be obtained over short acquisition times, while a delayed probe pulse ensures an efficient non-resonant background suppression.
authors.affiliation: IFN-CNR and Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
authors.forename: Vikas
authors.initials: V
authors.lastname: Kumar
authors.forename: R
authors.initials: R
authors.lastname: Osellame
authors.forename: R
authors.initials: R
authors.lastname: Ramponi
authors.forename: G
authors.initials: G
authors.lastname: Cerullo
authors.forename: M
authors.initials: M
authors.lastname: Marangoni
mesh_terms: D004867:Equipment Design; D007834:Lasers; D008027:Light; D000432:Methanol / Q000737:chemistry; D055095:Optics and Photonics; D012997:Solvents; D013057:Spectrum Analysis / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013997:Time Factors; D014867:Water / Q000737:chemistry; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D012997:Solvents; D014867:Water; D015018:Ytterbium; D000432:Methanol