title: Influence of cooling on a bismuth-doped fiber laser and amplifier performance.
abstract: We characterize bismuth-doped fibers under different excitation wavelengths. The fiber laser performance at 1179 nm was investigated, incorporating different cooling arrangements. Effective heat extraction can reduce the temperature-dependent unsaturable loss in fiber, resulting in increased laser performance. The operation of a bismuth-doped fiber amplifier at 1179 nm, at both low and high input signals, is also examined. The amplifier efficiency and the saturation power both depend on effective fiber cooling.
authors.affiliation: Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK. mpk@orc.soton.ac.uk
authors.forename: Mridu P
authors.initials: MP
authors.lastname: Kalita
authors.forename: Seongwoo
authors.initials: S
authors.lastname: Yoo
authors.forename: Jayanta K
authors.initials: JK
authors.lastname: Sahu