Spiral wave formation in nonlinear diffraction interaction

Dejin Yu, Weiping Lu, Robert G. Harrison

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The formation of a spiral wave is addressed through theoretical study of a three level laser and with the investigation of the diffraction role in the spiral forming process in optics as compared with that of diffusion in hydrodynamics. The numerical simulations established that creation of a wavefront with open ends is necessary as prerequisite for forming of spiral waves in diffraction interaction. Diffraction in this system adjusts the normal wavefront velocity away from the free ends and near the tips to induce a normal velocity profile which imposes on the free edges of the wavefront. The nonlinear interaction between spiral waves lead to shock waves which bound them in turn screen their interaction, resulting in stable, spatial structures.

Original languageEnglish
Title of host publicationProceedings of the 1996 European Quantum Electronics Conference
Publication statusPublished - 1996
Event1996 Conference on Lasers and Electro-Optics Europe - Hamburg, Germany
Duration: 8 Sept 199613 Sept 1996


Conference1996 Conference on Lasers and Electro-Optics Europe


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