Experimental verification of soliton-like pulse-shaping mechanisms in passively mode-locked VECSELs

We present a detailed experimental study on the influence of dispersion on the pulse formation in passively modelocked vertical-external-cavity surface-emitting lasers (VECSELs). We have demonstrated that the shortest pulse duration requires slightly positive dispersion to balance the nonlinear phas...

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Published inOptics express Vol. 18; no. 10; pp. 10143 - 10153
Main Authors Hoffmann, Martin, Sieber, Oliver D, Maas, Deran J H C, Wittwer, Valentin J, Golling, Matthias, Südmeyer, Thomas, Keller, Ursula
Format Journal Article
LanguageEnglish
Published United States 10.05.2010
Subjects
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Lasers
Scattering, Radiation
Signal Processing, Computer-Assisted - instrumentation
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Summary:We present a detailed experimental study on the influence of dispersion on the pulse formation in passively modelocked vertical-external-cavity surface-emitting lasers (VECSELs). We have demonstrated that the shortest pulse duration requires slightly positive dispersion to balance the nonlinear phase shift induced by strong semiconductor gain and absorber saturation. This is in contrast to soliton modelocking in ion-doped solid-state lasers - but similarities remain and will be discussed. Our results are in good qualitative agreement with numerical simulations and confirm the quasi-soliton modelocking mechanism of ultrafast VECSELs.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.010143