title: Ultranarrow-linewidth, efficient amplification of low-power seed sources by a fiber amplifier.
abstract: We report efficient amplification of an external cavity diode laser in the 1.06-microm range. The diode laser radiation is coupled into a Nd-doped silica fiber. The fiber is pumped by a diode array with up to 6.15 W of power. After a single pass of the seed radiation through the fiber amplifier, we observe up to 1.74 W of single-mode, narrow-linewidth laser radiation that is tunable over a relatively wide range of 1.060-1.067 microm. The output from our amplifier has the same spectral characteristics as the seed beam.
authors.affiliation: Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA.
authors.forename: R
authors.initials: R
authors.lastname: Nicolaescu
authors.forename: T
authors.initials: T
authors.lastname: Walther
authors.forename: E S
authors.initials: ES
authors.lastname: Fry
authors.forename: M
authors.initials: M
authors.lastname: Muendel