title: Amplification of higher-order modes by stimulated Raman scattering in H2-filled hollow-core photonic crystal fiber.
abstract: We report a method for amplifying higher-order guided modes, synthesized with a spatial light modulator, in a hydrogen-filled hollow-core photonic crystal fiber. The gain mechanism is intermodal stimulated Raman scattering, a pump laser source in the fundamental mode providing amplification for weak higher-order seed modes at the Stokes frequency. The gain for higher-order modes up to LP31 is calculated and verified experimentally.
authors: Max Planck Institute for the Science of Light, Erlangen 91058, Germany. barbara.trabold@mpl.mpg.de
authors: B M
authors: BM
authors: Trabold
authors: A
authors: A
authors: Abdolvand
authors: T G
authors: TG
authors: Euser
authors: A M
authors: AM
authors: Walser
authors: P St J
authors: PS
authors: Russell