title: Generating tunable optical pulses over the ultrabroad range of 1.6-2.5 μm in GeO2-doped silica fibers with an Er:fiber laser source.
abstract: We report generation of femtosecond optical pulses tunable in the 1.6-2.5 μm range using GeO2-doped core silica-cladding fibers. Optical solitons with a duration of 80-160 fs have been measured by the FROG technique in the 2-2.3 μm range. To the best of our knowledge, these are the longest wavelength temporally characterized solitons generated in silica-based fibers. We have also demonstrated more than octave-spanning femtosecond supercontinuum generation in the 1.0-2.6 μm range.
authors.affiliation: Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia. elena.anashkina@gmail.com
authors.forename: E A
authors.initials: EA
authors.lastname: Anashkina
authors.forename: A V
authors.initials: AV
authors.lastname: Andrianov
authors.forename: M Yu
authors.initials: MY
authors.lastname: Koptev
authors.forename: V M
authors.initials: VM
authors.lastname: Mashinsky
authors.forename: S V
authors.initials: SV
authors.lastname: Muravyev
authors.forename: A V
authors.initials: AV
authors.lastname: Kim
mesh_terms: D005336:Fiber Optic Technology / Q000295:instrumentation*; D005857:Germanium; D007834:Lasers; D055100:Optical Fibers; D012822:Silicon Dioxide
chemical_list: D005857:Germanium; C040516:germanium oxide; D012822:Silicon Dioxide