Coherent Detection of Multiband Terahertz Radiation Using a Surface Plasmon-Polariton Based Photoconductive Antenna

被引：43
作者：
Liu, Shuchang [1 ]
Shou, Xiang [1 ]
Nahata, Ajay [1 ]
机构：
[1] Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT 84112 USA
来源：
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY | 2011年 / 1卷 / 02期
基金：
美国国家科学基金会;
关键词：
Antenna; narrowband; surface plasmons; terahertz (THz); ENHANCED TRANSMISSION; THZ RADIATION; SUBWAVELENGTH; LIGHT;
D O I：
10.1109/TTHZ.2011.2165241
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We characterize a dipole antenna structure that allows for coherent detection of narrowband terahertz radiation with enhanced sensitivity at the resonant frequency. The antenna incorporates a corrugated metal structure that surrounds the dipole. Each periodically spaced groove in the corrugation couples an approximate replica of the incident THz pulse to a surface plasmon-polariton pulse, which then propagates towards and is detected by the dipole. We use numerical simulations to validate the experimental data. Based on these results, we describe a multiband dipole antenna detector that allows for enhanced sensitivity at multiple frequencies. This device can also be used as an emitter.
引用
收藏
页码：412 / 415
页数：4
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