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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