Ultrafast nonlinear optical effects in semiconductor quantum wells resonantly driven by strong few-cycle terahertz pulses

被引：10

作者：

Tomaino, J. L. ^{[1
]}

Jameson, A. D. ^{[1
]}

Lee, Yun-Shik ^{[1
]}

Prineas, J. P. ^{[2
]}

Steiner, J. T. ^{[3
,4
]}

Kira, M. ^{[3
,4
]}

Koch, S. W. ^{[3
,4
]}

机构：

[1] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA

[2] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[3] Univ Marburg, Dept Phys, D-35032 Marburg, Germany

[4] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

SOLID-STATE ELECTRONICS | 2010年 / 54卷 / 10期

基金：

美国国家科学基金会;

关键词：

Few-cycle terahertz pulse; Nonlinear terahertz effect; Quantum well; Exciton; Rabi sideband;

D O I：

10.1016/j.sse.2010.05.020

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Intraexciton transitions in semiconductor quantum wells are modulated by strong and tunable few-cycle terahertz pulses. Time-resolved terahertz-pump and optical-probe measurements demonstrate that the 1s heavy-hole and light-hole exciton resonances undergo large-amplitude spectral modulations when the terahertz radiation is tuned near the 1s-2p intraexciton transition. The strong nonlinear optical transients exhibit the characteristics of Rabi sidebands. The spectral features also reveal the dephasing properties of the optically dark 2p states. A microscopic theory shows that the 2p-dephasing rate is three times that of the 1s-state. The ultrafast nonlinear optical effects and their quantum nature suggest promising applications to ultrahigh-speed optical signal processing and quantum information processing in the THz region. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1125 / 1129

页数：5

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