Electromagnetic beam propagation in nonlinear media

Simulation of Beam Propagation in Second-order Nonlinear Optical Media

Second-order nonlinearity in optical media acts as a source for harmonics generation. We set up a time-domain model that accounts not only for the second harmonic, but also for the higher harmonics that are induced by a beam propagation. The model is sol ed numerically using a second-order explicit scheme based on the exact solution of the nonlinear difference equation. The power spectrum of th...

Nonlinear Propagation of Electromagnetic Waves in Antiferromagnet

Asymptotic description of pulsed ultrawideband electromagnetic beam field propagation in dispersive, attenuative media.

The asymptotic description of the coupled spatial and temporal evolution of a pulsed ultrawideband electromagnetic beam field as it propagates through a dispersive, attenuative material that occupies the half-space z > or = z(0) is obtained from the angular spectrum of plane waves representation. This angular-spectrum representation expresses the wave field as a superposition of both homogeneou...

Modeling of electromagnetic waves propagation in nonlinear optical media using HSCN-TLM method

In this paper, we propose a hybrid symmetrical condensed node TLM approach for the simulation of optical media under femtosecond regime. The formulation is based on the piecewise linear recursive convolution (PLRC) technique, voltage sources and the introduction of the variable admittance concept. Optical solitons with Kerr and Raman nonlinearities are simulated using this novel approach.

Propagation of nonlinear waves in disordered media

We study the propagation of stationary waves in disordered non-linear media described by the nonlinear Schrödinger equation and show that for given boundary conditions and a given coherent wave incident on the sample, the number of solutions of the equation increases exponentially with sample size. We also discuss the ballistic case, the sensitivity of the solutions to the change of external pa...