title: Tuning high-power laser diodes with as much as 0.38 W of power and M(2) = 1.2 over a range of 32 nm with 3-GHz bandwidth.
abstract: Gain-guided diode lasers usually have emission wavelengths determined by the manufacturing process, with typically 0.5-1-nm bandwidth. Furthermore, their beam quality is rather poor. We show that external cavities allow for tunable narrow-bandwidth operation of gain-guided diode lasers. At the same time the beam quality is drastically improved; almost diffraction-limited light of more than 200 mW has been achieved over the whole tuning range from 910 to 942 nm with narrow bandwidth.
authors.forename: Volker
authors.initials: V
authors.lastname: Raab
authors.forename: Danilo
authors.initials: D
authors.lastname: Skoczowsky
authors.forename: Ralf
authors.initials: R
authors.lastname: Menzel