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Dispersion-free pulse duration reduction of passively Q-switched microchip lasers

By Reinhold Lehneis, Alexander Steinmetz, Cesar Jauregui, Jens Limpert and Andreas Tünnermann

Abstract

We present a dispersion-free method for the pulse duration reduction of passively Q-switched microchip laser (MCL) seed sources. This technique comprises two stages: one that carries out the self-phase modulation induced spectral broadening in a waveguide structure and a subsequent spectral filtering stage in order to shorten the pulses in time domain. The setup of a proof-of-principle experiment consists of a fiber-amplified passively Q-switched MCL, a passive single-mode fiber used as nonlinear element in which the spectrum is broadened, and a reflective volume-Bragg-grating acting as bandpass filter. A reduction of the pulse duration from 118 to 32 ps with high temporal quality has been achieved with this setup

Year: 2012
DOI identifier: 10.1364/OL.37.004401
OAI identifier: oai:fraunhofer.de:N-217172
Provided by: Fraunhofer-ePrints
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