title: Design and fabrication of hollow-core photonic crystal fibers for high-power ultrashort pulse transportation and pulse compression.
abstract: We report on the recent design and fabrication of kagome-type hollow-core photonic crystal fibers for the purpose of high-power ultrashort pulse transportation. The fabricated seven-cell three-ring hypocycloid-shaped large core fiber exhibits an up-to-date lowest attenuation (among all kagome fibers) of 40 dB/km over a broadband transmission centered at 1500 nm. We show that the large core size, low attenuation, broadband transmission, single-mode guidance, and low dispersion make it an ideal host for high-power laser beam transportation. By filling the fiber with helium gas, a 74 μJ, 850 fs, and 40 kHz repetition rate ultrashort pulse at 1550 nm has been faithfully delivered at the fiber output with little propagation pulse distortion. Compression of a 105 μJ laser pulse from 850 fs down to 300 fs has been achieved by operating the fiber in ambient air.
authors.affiliation: Gas-Phase Photonic Material Group, CPPM, Physics Department, University of Bath, Bath, UK.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Wang
authors.forename: Xiang
authors.initials: X
authors.lastname: Peng
authors.forename: M
authors.initials: M
authors.lastname: Alharbi
authors.forename: C Fourcade
authors.initials: CF
authors.lastname: Dutin
authors.forename: T D
authors.initials: TD
authors.lastname: Bradley
authors.forename: F
authors.initials: F
authors.lastname: Gérôme
authors.forename: Michael
authors.initials: M
authors.lastname: Mielke
authors.forename: Timothy
authors.initials: T
authors.lastname: Booth
authors.forename: F
authors.initials: F
authors.lastname: Benabid
mesh_terms: D006371:Helium; D049329:Nanostructures; D055100:Optical Fibers; D055620:Optical Phenomena
chemical_list: D006371:Helium