title: Differential phase-noise properties of a ytterbium-doped fiber amplifier for the Laser Interferometer Space Antenna.
abstract: The interferometric gravitational-wave detector Laser Interferometer Space Antenna (LISA) needs to transfer clock information among its three spacecraft in the form of phase-modulation sidebands. For this reason phase noise introduced by the optical chain between the carrier and a sideband must be low. We have measured this differential phase noise for a ytterbium-doped fiber amplifier emitting up to 2 W. For 1 W of output power as required for LISA, the measured differential phase noise was within its requirement. For 2 W output power the amplifier exhibited stimulated Brillouin scattering and showed a differential phase-noise factor of up to 15 higher. Dependencies on operating parameters and optical length noise of the amplifier were also measured.
authors.affiliation: AEI Hannover, (MPI für Gravitationsphysik und Leibniz Universität Hannover),Callinstrasse 38, 30167 Hannover, Germany. michael.troebs@aei.mpg.de
authors.forename: M
authors.initials: M
authors.lastname: Tröbs
authors.forename: S
authors.initials: S
authors.lastname: Barke
authors.forename: Th
authors.initials: T
authors.lastname: Theeg
authors.forename: D
authors.initials: D
authors.lastname: Kracht
authors.forename: G
authors.initials: G
authors.lastname: Heinzel
authors.forename: K
authors.initials: K
authors.lastname: Danzmann