Optimization of Nanoantenna-Enhanced Terahertz Emission from Photoconductive Antennas

被引：1
|
作者：
Lepeshov, S. I. [1 ]
Gorodetsky, A. A. [1 ,2 ,3 ]
Toropov, N. A. [1 ]
Vartanyan, T. A. [1 ]
Rafailov, E. U. [3 ]
Krasnok, A. E. [4 ]
Belov, P. A. [1 ]
机构：
[1] ITMO Univ, St Petersburg, Russia
[2] Univ Lancaster, Lancaster, England
[3] Aston Univ, Aston Inst Photon Technol, Birmingham, W Midlands, England
[4] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA
来源：
4TH INTERNATIONAL SCHOOL AND CONFERENCE ON OPTOELECTRONICS, PHOTONICS, ENGINEERING AND NANOSTRUCTURES (SAINT PETERSBURG OPEN 2017) | 2017年 / 917卷
基金：
俄罗斯基础研究基金会;
关键词：
SPECTROSCOPY;
D O I：
10.1088/1742-6596/917/6/062060
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 present the results of hybrid photoconductive antenna THz emission enhanced by silver nanoantenna arrays. By varying the size of nanoantennas and the distance between them, we obtain the greatest value of optical-to-THz conversion efficiency reached so far. The results of experimental investigations are in a good agreement with numerical simulations. The conversion efficiency reveals over 5-fold improvement at certain frequencies, if compared with similar photoconductive antenna without silver nanoparticles, while previous results for this type of antenna barely exceeded 2-fold conversion efficiency gain.
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页数：4
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