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 MOPA system

S. Schwertfeger, A. Klehr, T. Hoffmann, A. Liero, H. Wenzel and G. Erbert

Published in:

Appl. Opt., vol. 52, no. 14, pp. 3364-3367 (2013).

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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.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany

OCIS codes:

140.2020, 140.3280, 140.3325, 140.5960, 250.5980