title: How long wavelengths can one extract from silica-core fibers?
abstract: The generation of wavelengths above 3 μm by nonlinear processes in short silica photonic crystal fibers is investigated numerically. It was found that wavelengths in the 3-3.5 μm range may be generated quite efficiently in centimeter-long fiber pieces when pumping with femtosecond pulses in the 1.55-2 μm range. Wavelengths in the range of 3.5-4 μm can in principle be generated, but these require shorter fiber lengths for efficient extraction. The results indicate that useful 3 μm sources may be fabricated with existing silica-based fiber technology.
authors.forename: Jesper
authors.initials: J
authors.lastname: Lægsgaard
authors.forename: Haohua
authors.initials: H
authors.lastname: Tu
mesh_terms: D055100:Optical Fibers; D055620:Optical Phenomena; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide