Cascaded Raman slow light and optical spatial solitons in Kerr media
Résumé
We provide a complete experimental and numerical investigation of nonlinear beam propagation in a carbon disulfide liquid-filled Kerr slab waveguide using picosecond pulsed light. A first spatial analysis shows the generation of a multicolor solitary wave through the combined effects of cascaded Raman scattering and crossphase modulation. The impact of temporal effects on this self-trapped optical beam is further studied through a spatiotemporal analysis. It is shown in particular how cascaded Raman slow light induces optical delays between the solitonic components which prevents higher-order spatial soliton and provides a remarkable beam stability. Experimental observations are in very good agreement with numerical simulations of the spatiotemporal (1+1D) nonlinear Schr¨odinger equation including the Raman scattering.
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Cascaded_Raman_slow_light_and_optical_spatial_solitons_in_Kerr_media_2013_preprint.pdf (991.75 Ko)
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