Giant Kerr nonlinearities and slow optical solitons in coupled double quantum-wells

TL;DR

This paper demonstrates the formation of slow optical solitons in coupled double quantum-wells, highlighting giant Kerr nonlinearities and potential for practical nonlinear optical signal processing in solid-state devices.

Contribution

It introduces a method to generate slow optical solitons with giant Kerr nonlinearities in asymmetric coupled double quantum-wells using two-photon Raman resonance.

Findings

Giant Kerr nonlinearities achievable in AlGaAs-based CQW

Possibility of canceling linear absorption

Potential for nonlinear optical signal processing

Abstract

We show the formation of slow optical solitons in the asymmetric coupled double quantum-wells (CQW) via a two-photon Raman resonance. With the consideration of real parameters in AlGaAs-based CQW, we indicate the possibility to have cancellation of the linear absorption and giant Kerr nonlinearities. With the controllable balance between dispersion and nonlinear effects in these solid-state based devices, this work may provide a practical platform for nonlinear optical signal processing.