Pulse trapping inside one-dimensional photonic crystal with relaxing cubic nonlinearity

TL;DR

This paper theoretically investigates pulse trapping in one-dimensional photonic crystals with relaxing cubic nonlinearity, revealing conditions for optimal trapping and its potential applications in optical memory and limiting.

Contribution

It introduces a theoretical analysis of pulse trapping mechanisms in photonic crystals with relaxing cubic nonlinearity, identifying key parameters and conditions for effective trapping.

Findings

Pulse trapping depends on pulse intensity and nonlinearity sign.

Optimal trapping occurs within specific relaxation time and pulse duration ranges.

Pulse trapping is only observed with positive nonlinearity coefficients.

Abstract

We theoretically study the effect of pulse trapping inside one-dimensional photonic crystal with relaxing cubic nonlinearity. We analyze dependence of light localization on pulse intensity and explain its physical mechanism as connected with formation of dynamical nonlinear cavity inside the structure. We search for the range of optimal values of parameters (relaxation time and pulse duration) and show that pulse trapping can be observed only for positive nonlinearity coefficients. We suppose that this effect can be useful for realization of optical memory and limiting.