THz-Wave Difference Frequency Generation by Phase-Matching in GaAs/Al_(x)Ga_(1-x)As Asymmetric Quantum Well

曹小龙; 王与烨; 徐德刚; 钟凯; 李敬辉; 李忠洋; 朱能念; 姚建铨

首页> 中文期刊> 《中国物理快报：英文版》 >THz-Wave Difference Frequency Generation by Phase-Matching in GaAs/Al_(x)Ga_(1-x)As Asymmetric Quantum Well

THz-Wave Difference Frequency Generation by Phase-Matching in GaAs/Al_(x)Ga_(1-x)As Asymmetric Quantum Well

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摘要

An asymmetric quantum well (AQW) is designed to emit a terahertz (THz) wave by using difference frequency generation (DFG) with the structure of GaAs/Al_(0.2)Ga_(0.8)As/Al_(0.5) Ga_(0.5)As under a doubly resonant condition.It is found that the second-order nonlinear susceptibility χ^((2)) varies with the two pump wavelengths,and it can reach the peak value of 1.61 μm/V when the wavelengths are given as λ_(p1) =9.756 μm and λ_(p2) =10.96 μm,respectively.The numerical results show that the refractive index of one pump wave in the AQW is concerned with not only its own wavelength but also the other wavelength.Phase-matching inside the AQW can be obtained through the tuning of the two pump wavelengths.

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来源
《中国物理快报：英文版》 |2012年第1期|133-136|共4页
作者
曹小龙; 王与烨; 徐德刚; 钟凯; 李敬辉; 李忠洋; 朱能念; 姚建铨;
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作者单位

College of Precision Instrument and Opto-electronics Engineering;

Institute of Laser and Opto-electronics;

Tianjin University;

Tianjin 300072;

Key Laboratory of Opto-electronics Information Technology(Ministry of Education);

Tianjin University;

Tianjin 300072;

Department of Computer Science and Technology;

Renai College;

Tianjin University;

Tianjin 301636;

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原文格式 PDF
正文语种 chi
中图分类光电子技术、激光技术;
关键词
pump; tuning; Phase;

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THz-Wave Difference Frequency Generation by Phase-Matching in GaAs/Al_(x)Ga_(1-x)As Asymmetric Quantum Well

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