Picosecond pulses with 50W peak power and reduced ASE background from an all-semiconductor MOPA system
S. Schwertfeger, A. Klehr, T. Hoffmann, A. Liero, H. Wenzel, G. Erbert
Published in:
Appl. Phys. B, vol. 103, no. 3, pp. 603-607 (2011).
Abstract:
Using a single-stage all-semiconductor master oscillator-power amplifier system, consisting of a Q-switched distributed Bragg reflector laser as master oscillator and a tapered power amplifier, we generate laser pulses with a length of 80 ps and a peak power of 50W. The spectral width is less than 1 nm around a center wavelength of 1066 nm. The background of the amplified spontaneous emission is significantly reduced due to a pulsed, instead of continuouswave operation of the amplifier. The current pulses have a width of approximately 10 ns and a repetition frequency of 1.25 MHz.
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
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