title: Environmentally-stable femtosecond ytterbium fiber laser with birefringent photonic bandgap fiber.
abstract: We demonstrate an environmentally-stable mode-locked ytterbium fiber laser. The large birefringence of hollow-core photonic bandgap fiber allows it to control polarization in the laser while it provides the anomalous dispersion necessary for stretched-pulse operation. The laser generates 1-nJ pulses, which are dechirped to 70 fs.
authors.forename: Hyungsik
authors.initials: H
authors.lastname: Lim
authors.forename: Andy
authors.initials: A
authors.lastname: Chong
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise