Simultaneous fs pulse spectral broadening and third harmonic generation in highly nonlinear fibre: experiments and simulations |
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| Authors: | B Kibler R Fischer G Genty DN Neshev JM Dudley |
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| Institution: | 1.Département d’Optique P.M. Duffieux, Institut FEMTO-ST,CNRS-Université de Franche-Comté, UMR 6174,Besan?on,France;2.Département Optique, Interaction Matière Rayonnement, Institut CARNOT de Bourgogne,CNRS-Université de Bourgogne UMR 5209,Dijon,France;3.Nonlinear Physics Centre, Research School of Physical Sciences and Engineering,Australian National University,Canberra,Australia;4.Institute of Physics, Optics Laboratory,Tampere University of Technology,Tampere,Finland |
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| Abstract: | Experiments and numerical simulations are used to study non-phasematched single-mode third harmonic generation occurring simultaneously
with fs pulse spectral broadening in highly nonlinear fibre. Pump pulses around 100 fs at 1560 nm injected into sub-5 cm lengths
of commercially-available highly nonlinear fibre are observed to undergo spectral broadening spanning over 700 nm at the -30 dB
level, and to simultaneously generate third harmonic radiation around 520 nm. Simulations based on a generalized nonlinear
envelope equation are shown to well reproduce the spectral structure of the broadened pump pulses and the generated third
harmonic signal.
PACS 42.65.-k; 42.81.Dp |
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