Chalcogenide glass Raman fiber laser

We report the operation of a chalcogenide glass Raman fiber laser. To mitigate photoinduced effects and minimize impurity absorption, a 2051 nm Tm3+ -doped silica fiber laser was employed as the pump source. Vibrations between the polymerlike layers comprising the glass produced first Stokes emission at 2062 nm, an output power of 0.64 W, and a slope efficiency of ∼66%. Bond bending and bond stretching vibrations within the layers simultaneously produced first Stokes output at 2102 nm (0.2 W) and 2166 nm (16 mW), respectively. Second Stokes output at 2074 nm was produced when the fiber length was extended.