Slow optical solitons via intersubband transitions in a semiconductor quantum well

TL;DR

This paper demonstrates the formation of slow optical solitons in semiconductor quantum wells via intersubband transitions, highlighting potential applications in optical delay, buffering, and electrically controlled phase modulation.

Contribution

It introduces a novel nonlinear optical process for slow solitons in SQWs, combining analytical and numerical analysis, and explores tunable phase modulation capabilities.

Findings

Formation of bright and dark slow optical solitons in SQWs

Generation of large cross-phase modulation (XPM)

Potential for electrically controlled phase modulation

Abstract

We show the formation of bright and dark slow optical solitons based on intersubband transitions in a semiconductor quantum well (SQW). Using the coupled Schrodinger-Maxwell approach, we provide both analytical and numerical results. Such a nonlinear optical process may be used for the control technology of optical delay lines and optical buffers in the SQW solid-state system. With appropriate parameters, we also show the generation of a large cross-phase modulation (XPM). Since the the intersubband energy level can be easily tuned by an external bias voltage, the present investigation may open the possibility for electrically controlled phase modulator in the solid-state system.