Frankfurt 2006 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 71: Poster Nichtlineare optische Effekte und Lichtquellen
Q 71.5: Poster
Donnerstag, 16. März 2006, 16:30–18:30, Labsaal
Manipulation of supercontinuum generation by stimulated cascaded four-wave mixing in tapered fibers — •Jörn Teipel1, Diana Türke1, and Harald Giessen2 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstraße 8, D-53115 Bonn — 24. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart
In a supercontinuum generation setup we have simultaneously pumped two home-made, tapered optical fibers with 100 fs pulses from a Ti:Sa laser. A filtered spectral component of the white light generated in the first fiber has been synchronized with the subsequent pump pulse in the second fiber to stimulate cascaded four-wave mixing processes. The spectral evolution and interaction of signal and idler with the pump wavelength is investigated in detail with increasing pump power. Furthermore the four-wave mixing can lead to modified initial conditions for the evolution of the supercontinuum and provides the initiation for an altered shape of the spectral fiber output when soliton dynamics are involved.