Ou, HongyaDai, ShixunZhang, PeiqingLiu, ZijunWang, XunsiChen, FeifeiXu, HangLuo, BaohuaHuang, YicongWang, Rongping2016-08-292016-08-290146-9592http://hdl.handle.net/1885/107332We 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 Ge<sub>15</sub>Sb<sub>25</sub>Se<sub>60</sub> and Ge<sub>15</sub>Sb<sub>20</sub>Se<sub>65</sub> (mol. %), respectively. The nonlinear refractive index (n<sub>2</sub>) of the core glass is 19×10<sup>-18</sup> m<sup>2</sup>/W at 1.55 μm, and its laser-induced damage threshold under irradiation of 3.0 μm fs laser is approximately 3674 GW/cm<sup>2</sup>. 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.National Natural Science Foundation of China (NSFC) (61377099, 61435009); Ningbo University.4 pages© 2016 Optical Society of AmericaNonlinear opticsFibersSupercontinuum generationUltrabroad supercontinuum generated from a highly nonlinear Ge-Sb-Se fiber2016-07-1510.1364/OL.41.003201