title: Erbium fiber laser based on intracore femtosecond-written fiber Bragg grating.
abstract: We report the inscription of fiber Bragg gratings (FBGs) into a nonphotosensitive Er-doped fiber by using a phase-mask scanning technique with near IR femtosecond laser pulses. A grating of 40 mm length with a period of 1.075 microm was realized. We measured transmission losses of -18.9 dB at lambda=1554.5 nm with a FWHM bandwidth of 0.15 nm. By pumping the fiber containing the fabricated FBG, it was possible to realize a fiber laser with an output power of 38 mW, a slope efficiency of 21.1%, and low noise (SNR=60 dB).
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University, Max-Wien-Platz 1, D-07743 Jena, Germany. wikszak@iap.uni-jena.de
authors.forename: Elodie
authors.initials: E
authors.lastname: Wikszak
authors.forename: Jens
authors.initials: J
authors.lastname: Thomas
authors.forename: Jonas
authors.initials: J
authors.lastname: Burghoff
authors.forename: Bülend
authors.initials: B
authors.lastname: Ortaç
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte
authors.forename: Ulrike
authors.initials: U
authors.lastname: Fuchs
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann