Pulse-shape improvement during amplification and second-harmonic generation of picosecond pulses at 531 nm
S.M. Riecke1, K. Lauritsen1, R. Erdmann1, M. Uebernickel2, K. Paschke2, and G. Erbert2
Published in:
Opt. Lett., vol. 35, no. 10, pp. 1500-1502 (2010).
Abstract:
We study second-harmonic generation of picosecond pulses in bulk periodically poled lithium niobate using an all-semiconductor master oscillator-power amplifier with gain-switched seed as our fundamental source. Both during amplification and during the subsequent second-harmonic generation, the signal pulse shape improves, and the resulting pulses at 531 nm are nearly independent of the seed pump conditions. Over a wide range of repetition rates and seed settings, we obtain green pulses with a duration of less than 31 ps FWHM and a peak power of more than 5.1 W. We further investigate the influence of the fundamental´s spectral dynamics on pulsed second-harmonic generation efficiency and obtain excellent agreement between our measurements and previously published theoretical treatments.
1 PicoQuant GmbH, Rudower Chaussee 29, 12489 Berlin, Germany
2 Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
OCIS codes:
140.7090, 140.2020, 140.3515, 140.3490, 140.7300, 190.2620.
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