title: Polarization-demultiplexed two-color frequency conversion of femtosecond pulses in birefringent photonic-crystal fibers.
abstract: Birefringent photonic-crystal fibers provide efficient polarization-sensitive anti-Stokes frequency conversion of unamplified 35-fs Ti: sapphire laser pulses, giving rise to a doublet of intense blue-shifted emission spectral lines centered at 490 and 510 nm. We show that this anti-Stokes doublet can be wavelength-demultiplexed by a polarizationseparating prism. Generation of the 510-nm signal is decoupled from frequency conversion to 490 nm by accurately polarizing the pump field along one of the principal axes of the elliptically deformed fiber core.
authors.forename: Ming-Lie
authors.initials: ML
authors.lastname: Hu
authors.forename: Ching-Yue
authors.initials: CY
authors.lastname: Wang
authors.forename: Yan-Feng
authors.initials: YF
authors.lastname: Li
authors.forename: Lu
authors.initials: L
authors.lastname: Chai
authors.forename: Aleksei
authors.initials: A
authors.lastname: Zheltikov