title: Fluorescence and saturated absorption in a neodymium doped silica fiber.
abstract: We report the study of absorption and fluorescence in neodymium doped silica fibers with excitation pulses much shorter than the fluorescence lifetime. Fluorescence and absorption saturation are observed for pump powers well below the damage threshold of the fiber. The saturation process is described using the density matrix method for the light absorption and the normal mode formalism for the propagation. The experimental results are in good agreement with the theory.
authors.forename: A
authors.initials: A
authors.lastname: Saissy
authors.forename: Z P
authors.initials: ZP
authors.lastname: Cai
authors.forename: D B
authors.initials: DB
authors.lastname: Ostrowsky