Generation and detection,of ultrabroadband terahertz radiation using photoconductive emitters and receivers

被引：146

作者：

Shen, YC

Upadhya, PC

Beere, HE

Linfield, EH

Davies, AG

Gregory, IS

Baker, C

Tribe, WR

Evans, MJ

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

[3] TeraView Ltd, Cambridge CB4 0WG, England

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 02期

关键词：

D O I：

10.1063/1.1768313

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the coherent generation and detection of ultrabroadband terahertz (THz) radiation using low-temperature-grown GaAs photoconductive antennas as both emitters and receivers. THz radiation with frequency components over 15 THz was obtained, the highest reported for a THz time-domain system based on photoconductive antennas. Such a system has a smooth spectral distribution between 0.3 and 7.5 THz, ideal for spectroscopic applications. In addition, sharp spectral features at 8.0, and 8.8 THz were observed, and explained in terms of optical phonon resonances in the photoconductive antennas. (C) 2004 American Institute of Physics.

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页码：164 / 166

页数：3

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