Time-resolved THz spectroscopy in a parallel plate waveguide

被引：6
|
作者：
Cooke, David G. [1 ]
Jepsen, Peter Uhd [1 ]
机构：
[1] Tech Univ Denmark, DTU Foton, DK-2800 Lyngby, Denmark
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2009年 / 206卷 / 05期
关键词：
TERAHERTZ; PROPAGATION;
D O I：
10.1002/pssa.200881281
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We demonstrate time-resolved terahertz spectroscopy inside a novel parallel plate waveguide where one of the metallic plates is replaced by a transparent conducting oxide. Considerable improvements to the waveguide loss coefficient are shown, with a power absorption coefficient of 4 cm(-1) at 0.5 THz. The time resolution of the technique is shown to be limited by the spatial excitation profile, which for sharply focused beams can approach similar to 1 ps time scales. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：997 / 1000
页数：4
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