title: High-power 808 nm ridge-waveguide diode lasers with very small divergence, wavelength-stabilized by an external volume Bragg grating.
abstract: We present data on ridge-waveguide diode lasers having a vertical far-field divergence of only 11.5 degrees (FWHM) owing to an appropriate waveguide design. The lasers emitted an optical power of more than 1 W into the spatial fundamental mode from a ridge width of 5 microm. The emission wavelength was stabilized to a narrow range around 808 nm by placing a volume Bragg grating in front of the outcoupling facet.
authors.affiliation: Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, 12489 Berlin, Germany. wenzel@fbh-berlin.de
authors.forename: H
authors.initials: H
authors.lastname: Wenzel
authors.forename: K
authors.initials: K
authors.lastname: Häusler
authors.forename: G
authors.initials: G
authors.lastname: Blume
authors.forename: J
authors.initials: J
authors.lastname: Fricke
authors.forename: M
authors.initials: M
authors.lastname: Spreemann
authors.forename: M
authors.initials: M
authors.lastname: Zorn
authors.forename: G
authors.initials: G
authors.lastname: Erbert