Photoconductive LT-GaAs Terahertz Antennas: Correlation Between Surface Quality and Emission Strength

被引：0
|
作者：
O. M. Abdulmunem
K. I. Hassoon
J. Völkner
M. Mikulics
K. I. Gries
J. C. Balzer
机构：
[1] Philipps-University of Marburg,Department of Physics and Materials Science Center
[2] University of Technology,Department of Applied Sciences
[3] Philipps University Marburg,Faculty of Physics
[4] Peter Grünberg Institute (PGI-9),undefined
[5] Forschungszentrum Jülich GmbH,undefined
来源：
Journal of Infrared, Millimeter, and Terahertz Waves | 2017年 / 38卷
关键词：
THz time-domain spectroscopy; Low-temperature grown GaAs; Photoconductive antenna; Coplanar stripline;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate the influence of the surface properties of a low-temperature-grown GaAs photoconductive antenna on the terahertz (THz) emission strength, using a specially designed THz time-domain spectroscopy system. The system allows us to excite six different positions along the 10 μm gap of a coplanar stripline antenna with a length of 10 mm without changing the alignment of the optical or THz beam path. A comparison to the surface roughness and the grain size which are extracted from an atomic force and a scanning electron microscope is given.
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页码：574 / 582
页数：8
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