title: High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth.
abstract: We manufactured and investigated distributed Bragg reflector ridge-waveguide diode lasers having sixth-order surface gratings and an emission wavelength around 974 nm. The single-mode output power of the lasers with a total length of 4 mm exceeded 1 W. A very small spectral linewidth of 1.4 MHz (3 dB) consisting of a Lorentzian part of 146 kHz and a Gaussian part of 1308 MHz was measured using a self-delayed heterodyne measurement technique.
authors.affiliation: Ferdinand-Braun-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany. katrin.paschke@fbh-berlin.de
authors.forename: K
authors.initials: K
authors.lastname: Paschke
authors.forename: S
authors.initials: S
authors.lastname: Spiessberger
authors.forename: C
authors.initials: C
authors.lastname: Kaspari
authors.forename: D
authors.initials: D
authors.lastname: Feise
authors.forename: C
authors.initials: C
authors.lastname: Fiebig
authors.forename: G
authors.initials: G
authors.lastname: Blume
authors.forename: H
authors.initials: H
authors.lastname: Wenzel
authors.forename: A
authors.initials: A
authors.lastname: Wicht
authors.forename: G
authors.initials: G
authors.lastname: Erbert