title: Fiber-based optical parametric oscillator for high resolution coherent anti-Stokes Raman scattering (CARS) microscopy.
abstract: Imaging based on coherent anti-Stokes Raman scattering (CARS) relies on the interaction of high peak-power, synchronized picosecond pulses with narrow bandwidths and a well-defined frequency difference. Recently a new type of fiber-based CARS laser source based on four-wave-mixing (FWM) has been developed. In order to enhance its spectral resolution and efficiency, a FWM based fiber optical parametric oscillator (FOPO) is proposed in this work. The source delivers 180 mW with 5.6 kW peak power for the CARS pump and 130 mW with 2.9 kW peak power for the Stokes signal. CARS resonances around 2850 and 2930 cm(-1) can be resolved with a resolution of 1 cm(-1) enabling high-contrast, spectrally resolved CARS imaging of biological tissue.
authors.forename: Thomas
authors.initials: T
authors.lastname: Gottschall
authors.forename: Tobias
authors.initials: T
authors.lastname: Meyer
authors.forename: Martin
authors.initials: M
authors.lastname: Baumgartl
authors.forename: Benjamin
authors.initials: B
authors.lastname: Dietzek
authors.forename: Jürgen
authors.initials: J
authors.lastname: Popp
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann