title: Ultrabroad supercontinuum generated from a highly nonlinear Ge-Sb-Se fiber.
abstract: We report the fabrication of a novel high nonlinear fiber made of Ge-Sb-Se chalcogenide glasses with high numerical aperture (∼1.0), where the core and the cladding glasses consist of Ge15Sb25Se60and Ge15Sb20Se65(mol. %), respectively. The nonlinear refractive index (n2) of the core glass is 19×10-18m2/W at 1.55 μm, and its laser-induced damage threshold under irradiation of 3.0 μm fs laser is approximately 3674  GW/cm2. By pumping a 20-cm-long fiber with a core diameter of 23 μm using 150 fs pulses at 6.0 μm, supercontinuum spanning from ∼1.8 to ∼14  μm was generated.
authors.forename: Hongya
authors.initials: H
authors.lastname: Ou
authors.forename: Shixun
authors.initials: S
authors.lastname: Dai
authors.forename: Peiqing
authors.initials: P
authors.lastname: Zhang
authors.forename: Zijun
authors.initials: Z
authors.lastname: Liu
authors.forename: Xunsi
authors.initials: X
authors.lastname: Wang
authors.forename: Feifei
authors.initials: F
authors.lastname: Chen
authors.forename: Hang
authors.initials: H
authors.lastname: Xu
authors.forename: Baohua
authors.initials: B
authors.lastname: Luo
authors.forename: Yicong
authors.initials: Y
authors.lastname: Huang
authors.forename: Rongping
authors.initials: R
authors.lastname: Wang