Coherent terahertz detection with a large-area photoconductive antenna

被引：39
|
作者：
Peter, F. [1 ]
Winnerl, S. [1 ]
Nitsche, S. [1 ]
Dreyhaupt, A. [1 ]
Schneider, H. [1 ]
Helm, M. [1 ]
机构：
[1] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 08期
关键词：
D O I：
10.1063/1.2772783
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a nonresonant photoconductive terahertz detection antenna suitable for detection of both focused and unfocused terahertz radiations. Our system consists of a scalable terahertz emitter based on an interdigitated electrode structure and a detection antenna with similar electrode geometry. While the emitter is fabricated on semi-insulating GaAs we compare different ion-implanted GaAs-based detection antennas. We studied the dependence of the measured terahertz signal on the power and spot size of the gating laser pulse. In addition we compare the performance of our antenna with that of electro-optical sampling. (c) 2007 American Institute of Physics.
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页数：3
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