title: Compact coherent anti-Stokes Raman scattering microscope based on a picosecond two-color Er:fiber laser system.
abstract: We present a compact coherent anti-Stokes Raman scattering microscope based on a widely tunable picosecond Er:fiber laser. Intense and bandwidth-limited 1 ps pump pulses at a center wavelength of 775 nm are generated via frequency mixing within the broadband fundamental at 1.55 microm. Narrowband Stokes pulses are obtained by frequency shifting of solitons in a highly nonlinear bulk fiber and subsequent second-harmonic generation. The tuning range from 850 nm to 1100 nm gives access to vibrational resonances between 1150 cm(-1) and 3800 cm(-1). A first imaging application in the spectral region of CH stretch vibrations is demonstrated.
authors.affiliation: Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany.
authors.forename: Günther
authors.initials: G
authors.lastname: Krauss
authors.forename: Tobias
authors.initials: T
authors.lastname: Hanke
authors.forename: Alexander
authors.initials: A
authors.lastname: Sell
authors.forename: Daniel
authors.initials: D
authors.lastname: Träutlein
authors.forename: Alfred
authors.initials: A
authors.lastname: Leitenstorfer
authors.forename: Romedi
authors.initials: R
authors.lastname: Selm
authors.forename: Martin
authors.initials: M
authors.lastname: Winterhalder
authors.forename: Andreas
authors.initials: A
authors.lastname: Zumbusch