MIDIT OFD CATS Modelling, Nonlinear Dynamics Optics and Fluid Dynamics Chaos and Turbulence Studies and Irreversible Thermodynamics Risø National Laboratory Niels Bohr Institute and Technical University of Denmark Building 128 Department of Chemistry Building 321 P.O. Box 49 University of Copenhagen DK-2800 Lyngby DK-4000 Roskilde DK-2100 Copenhagen Ø Denmark Denmark Denmark
by Morten Bache
Department of Mathematical Modelling,
DTU
MIDIT-seminar 466
Monday October 11, 1999, 12.30 h
at MIDIT, IMM Building 305, room 027
Abstract: We investigate pattern formation in intracavity second harmonic generation, and show the importance of including also a competing parametric process. Through numerical simulations we show that the parametric fields influence the system by depleting the field amplitudes or by changing the pattern types observed. In some cases the parametric fields are even preventing intrinsic bifurcations to occur. We discuss physical relevant parameters where different types of behaviour may be seen, and the corresponding power thresholds will be calculated for an experimental setup.