title: Broadband parametric wavelength conversion at 1 μm with large mode area fibers.
abstract: Fiber-optic parametric wavelength conversion (PWC) below the zero-dispersion wavelength of silica is typically constrained by the requirement of a small, tightly confined mode with anomalous dispersion to achieve phase matching. This limits the ability to power scale PWC at arbitrary wavelengths. However, the constraint is lifted for higher-order modes. We demonstrate PWC in the 1 μm band via degenerate four-wave mixing pumped in a large effective area (>600  μm²) LP(0,7) mode of a double-clad fiber. We obtain up to 25% conversion in to the Stokes line with 0.5 ns pump pulses, corresponding to ~20  kW peak power at the converted wavelength.
authors.forename: P
authors.initials: P
authors.lastname: Steinvurzel
authors.forename: J
authors.initials: J
authors.lastname: Demas
authors.forename: B
authors.initials: B
authors.lastname: Tai
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Yan
authors.forename: S
authors.initials: S
authors.lastname: Ramachandran