Voltage-controlled wavelength conversion by terahertz electro-optic modulation in double quantum wells

被引：30

作者：

Su, MY ^{[1
]}

Carter, SG

Sherwin, MS

Huntington, A

Coldren, LA

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Ctr Terahertz Sci & Technol, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 09期

关键词：

D O I：

10.1063/1.1502441

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An undoped double quantum well (DQW) was driven with a terahertz (THz) electric field of frequency omega(THz) polarized in the growth direction, while simultaneously illuminated with a near-infrared (NIR) laser at frequency omega(NIR). The intensity of NIR upconverted sidebands omega(sideband)=omega(NIR)+omega(THz) was maximized when a dc voltage applied in the growth direction tuned the excitonic states into resonance with both the THz and NIR fields. There was no detectable upconversion far from resonance. The results demonstrate the possibility of using gated DQW devices for all-optical wavelength shifting between optical communication channels separated by up to a few THz. (C) 2002 American Institute of Physics.

引用

页码：1564 / 1566

页数：3

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