title: Octave spanning supercontinuum in an As₂S₃ taper using ultralow pump pulse energy.
abstract: An octave spanning spectrum is generated in an As₂S₃ taper via 77 pJ pulses from an ultrafast fiber laser. Using a previously developed tapering method, we construct a 1.3 μm taper that has a zero-dispersion wavelength around 1.4 μm. The low two-photon absorption of sulfide-based chalcogenide fiber allows for higher input powers than previous efforts in selenium-based chalcogenide tapered fibers. This higher power handling capability combined with input pulse chirp compensation allows an octave spanning spectrum to be generated directly from the taper using the unamplified laser output.
authors.affiliation: Centre for Ultrahigh-Bandwidth Devices for Optical Systems, Institute for Photonics and Optical Science, School of Physics, The University of Sydney, NSW 2006, Australia. hudson@physics.usyd.edu.au
authors.forename: Darren D
authors.initials: DD
authors.lastname: Hudson
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Dekker
authors.forename: Eric C
authors.initials: EC
authors.lastname: Mägi
authors.forename: Alexander C
authors.initials: AC
authors.lastname: Judge
authors.forename: Stuart D
authors.initials: SD
authors.lastname: Jackson
authors.forename: Enbang
authors.initials: E
authors.lastname: Li
authors.forename: J S
authors.initials: JS
authors.lastname: Sanghera
authors.forename: L B
authors.initials: LB
authors.lastname: Shaw
authors.forename: I D
authors.initials: ID
authors.lastname: Aggarwal
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton