Effects of pulse collisions in a multilayer system with noninstantaneous cubic nonlinearity

Abstract

The numerical simulations of an ultrashort pulse propagation in a one-dimensional nonlinear photonic crystal are carried out. It is known that the relaxation of cubic nonlinearity is the reason for the effect of pulse self-trapping in such multilayer system. In this paper we study further implications of this effect. It is shown that the trapped light absorbs additional low-intensity pulses which cannot be self-trapped \textit{per se}. On the other hand, such low-intensity pulses are subject of the so-called induced trapping when light gets trapped due to a collision of two such pulses. We consider the conditions for this effect in both cases of co- and counter-propagating pulses.

arXiv comment9+ pages, 9 figures

References in corpus (5)

• Oscillatory dynamics in nanocavities with noninstantaneous Kerr response
• Instability of speckle patterns in random media with noninstantaneous Kerr nonlinearity
• Pulse trapping inside one-dimensional photonic crystal with relaxing cubic nonlinearity
• Asymmetric light transmission through a photonic crystal with relaxing Kerr nonlinearity
• Spectral transformations in the regime of pulse self-trapping in a nonlinear photonic crystal

Cited by in corpus (2)

• Pulse propagation in one-dimensional disordered photonic crystals: Interplay of disorder with instantaneous and relaxing nonlinearities
• Disorder-induced light trapping enhanced by pulse collisions in one-dimensional nonlinear photonic crystals