Abstract
It was shown that the inclusion of diffraction terms into the usual Maxwell–Bloch equations lead to the appearance of "optical vortices"1 and in the limit of small field amplitudes and large decay rates for the atomic variables, those equations are isomorphic to the Guinzburg–Landau one with constant complex parameters. However, in the case of the "longitudinal" boundary conditions for a real laser, the equations have parameters that depend on the spatial coordinates.2 Here we show that the inclusion of those terms leads also to the appearance of defects, a decay in the spatial correlation function, and therefore to defect-mediated turbulence. In particular, this system does not require the conservation of the topological charge. We analyzed the motion of defects, their interaction, and their influence on the temporal dynamics. The numerical results are compared with experimental data obtained from a CO2 laser with a large Fresnel number.
© 1990 Optical Society of America
PDF ArticleMore Like This
J. R. Tredicce, E. J. D’Angelo, C. Green, G. B. Mindlin, L. M. Narducci, H. Solari, G. L. Oppo, and L. Gil
STDOPD146 Nonlinear Dynamics in Optical Systems (NLDOS) 1990
V. U. Zavorotny
TuG1 OSA Annual Meeting (FIO) 1990
Kyong H. Kim, Young S. Choi, Robert V. Hess, Clayton H. Blair, Philip Brockman, Norman P. Barnes, George W. Henderson, and Milton R. Kokta
ML7 Advanced Solid State Lasers (ASSL) 1990