Characterization of low temperature GaAs antenna array terahertz emitters

被引：79
作者：
Awad, M.
Nagel, M.
Kurz, H.
Herfort, J.
Ploog, K.
机构：
[1] Univ Aachen, Rhein Westfal TH Aachen, Inst Halbleitertech, D-52074 Aachen, Germany
[2] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 18期
关键词：
D O I：
10.1063/1.2800885
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a fabrication concept for photoconductive terahertz antenna arrays based on substrate-transferred thin films of low-temperature-grown GaAs semiconductor material. Adjacent array elements are physically decoupled by removing completely the photoconductive material in between. In contrast to former array devices based on intrinsic bulk GaAs substrates, this method allows the use of arbitrary carrier substrates with enhanced transmission properties. The emission characteristics of the device are investigated in terms of bandwidth, directivity, and saturation caused by charge-carrier induced field-screening effects. Screening-free operation is experimentally observed for an average optical power density below 2.2x10(-4) mW/mu m(2). (C) 2007 American Institute of Physics.
引用
收藏
页数：3
相关论文
共 50 条
[41]   Study on a Sparse Antenna Array for Terahertz Imaging [J].
Hu, Shaoqing ;
Zhou, Min ;
Chen, Xiaodong ;
Alfadhl, Yasir .
2017 10TH UK-EUROPE-CHINA WORKSHOP ON MILLIMETRE WAVES AND TERAHERTZ TECHNOLOGIES (UCMMT), 2017,
[42]   Terahertz antenna array as a heat blocking structure [J].
Anjum, Ali ;
Javed, Sidrah ;
Bhopal, M. Fahad ;
Zahid, Zeeshan .
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, 2015, 29 (01) :14-25
[43]   High-Bias-Field Operation of GaAs Photoconductive Terahertz Emitters [J].
Welsch, Malte ;
Singh, Abhishek ;
Winnerl, Stephan ;
Pashkin, Alexej ;
Xu, Ming ;
Li, Mengxia ;
Helm, Manfred ;
Schneider, Harald .
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2021, 42 (05) :537-546
[44]   Optical and terahertz power limits in the low-temperature-grown GaAs photomixers [J].
Verghese, S ;
McIntosh, KA ;
Brown, ER .
APPLIED PHYSICS LETTERS, 1997, 71 (19) :2743-2745
[45]   Terahertz-Wave Characterization of LTG-GaAs Thin-Film Photoconductive Antenna [J].
Rios, Ruben Dario Velasquez ;
Bikorimana, Simeon ;
Dorsinville, Roger ;
Seo, Sang-Woo .
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2017, 23 (04)
[46]   Plasmonic Photoconductive Terahertz Emitters Based on Logarithmic Spiral Antenna Arrays [J].
Berry, Christopher W. ;
Hashemi, Mohammed R. ;
Jarrahi, Mona .
2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2013,
[47]   Terahertz wave generation with low-temperature-grown GaAs photoconductive antennas [J].
Li, Tieyuan ;
Lou, Caiyun ;
Wang, Li ;
Huang, Jin ;
Zhao, Guozhong ;
Shi, Xiaoxi .
Zhongguo Jiguang/Chinese Journal of Lasers, 2009, 36 (04) :978-982
[48]   Carrier dynamics of terahertz emission from low-temperature-grown GaAs [J].
Liu, DF ;
Qin, JY .
APPLIED OPTICS, 2003, 42 (18) :3678-3683
[49]   Enhanced terahertz emission from a multilayered low temperature grown GaAs structure [J].
Rihani, Samir ;
Faulks, Richard ;
Beere, Harvey E. ;
Farrer, Ian ;
Evans, Michael ;
Ritchie, David A. ;
Pepper, Michael .
APPLIED PHYSICS LETTERS, 2010, 96 (09)
[50]   Optically excited terahertz emission from low-temperature-grown GaAs [J].
Cho, Shinho .
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2006, 48 (06) :1224-1227
12345