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Optoelectronics Letters

Slow light propagation without absorption based on intersubband transitions in a semiconductor quantum well

Han, Ding-an, Zeng, Ya-guang, Bai, Yanfeng

Published Jan 1, 2012• 0 citations
OpenAlex

Abstract

当半导体量井(SQW ) 与激光交往时，低紧张的轻脉搏的组速度理论上被学习。由调整参数，慢点亮探查领域的繁殖，这被显示出能在如此的一个系统被展出。同时，探查吸收获得系列能从吸收被改变到零，即，电磁地导致的透明性(EIT ) 。试验性地观察轻繁殖是容易的，并且它在许多领域里导致潜在的应用固态量信息，例如光切换，察觉和量计算。

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当半导体量井(SQW ) 与激光交往时，低紧张的轻脉搏的组速度理论上被学习。由调整参数，慢点亮探查领域的繁殖，这被显示出能在如此的一个系统被展出。同时，探查吸收获得系列能从吸收被改变到零，即，电磁地导致的透明性(EIT ) 。试验性地观察轻繁殖是容易的，并且它在许多领域里导致潜在的应用固态量信息，例如光切换，察觉和量计算。
We show the formation of bright and dark slow optical solitons based on intersubband transitions in a semiconductor quantum well (SQW). Using the coupled Schrödinger-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 intersubband energy level can be easily tuned by an external bias voltage, the present investigation may open possibilities for electrically controlled phase modulators in solid systems.
Abstract We put forward an efficient three‐wave mixing (TWM) scheme in an asymmetric semiconductor quantum well (SQW) based on intersubband transitions. Using the coupled Schrödinger–Maxwell approach, we derive the corresponding explicit analytical expressions for the input probe and generated TWM signal fields. Such a nonlinear optical process may be used for efficiently generating coherent short‐wavelength radiation in the SQW solid‐state system, which is much more practical than that in atomic system because of its flexible design and the controllable interference strength. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)