title: Generation of sub-100 ps pulses with a peak power of 65 W by gain switching, pulse shortening, and pulse amplification using a semiconductor-based master oscillator-power amplifier system.
abstract: We present a method of the generation of sub-100 ps pulses with an all-semiconductor master oscillator-power amplifier (MOPA) system, consisting of a three section distributed Bragg reflector (DBR) laser as MO and a two section tapered PA. The pulses generated by the gain-switched DBR laser are first shortened by the ridge-waveguide input section of the PA acting as a saturable absorber and then amplified by the tapered gain region section. We generate laser pulses with a minimum duration of 35 ps and a peak power of more than 65 W. The spectral width is less than 0.25 nm around a center wavelength of 1063 nm.
authors.affiliation: Ferdinand-Braun-Institut, Leibnitz-Institut für Höchstfrequenztechnik im Forschungsverbund Berlin e.V., Gustav-Kirchhoff-Strasse 4, Berlin D-12489, Germany. sven.schwertfeger@fbh‐berlin.de
authors.forename: Sven
authors.initials: S
authors.lastname: Schwertfeger
authors.forename: Andreas
authors.initials: A
authors.lastname: Klehr
authors.forename: Thomas
authors.initials: T
authors.lastname: Hoffmann
authors.forename: Armin
authors.initials: A
authors.lastname: Liero
authors.forename: Hans
authors.initials: H
authors.lastname: Wenzel
authors.forename: Götz
authors.initials: G
authors.lastname: Erbert