High-efficiency terahertz sources based on plasmonic contact electrodes

Author

Jarrahi, Mona

Author_Institution

Electr. Eng. Dept., Univ. of California Los Angeles, Los Angeles, CA, USA

fYear

2015

fDate

17-22 May 2015

Firstpage

1

Lastpage

4

Abstract

Use of plasmonic contact electrodes in photoconductive terahertz sources offers significantly higher optical-to-terahertz conversion efficiencies and terahertz radiation powers by mitigating the inherent tradeoff between photoconductor quantum efficiency and ultrafast operation. We demonstrate that optical-to-terahertz conversion efficiencies as high as 7.5% and milliwatt-level terahertz radiation powers can be offered by plasmonic photoconductive terahertz sources in both continuous-wave and pulsed operation.

Keywords

electrodes; photoconducting devices; plasmonics; terahertz wave generation; continuous-wave operation; milliwatt-level terahertz radiation powers; optical-to-terahertz conversion efficiencies; photoconductor quantum efficiency; plasmonic contact electrodes; plasmonic photoconductive terahertz sources; pulsed operation; ultrafast operation; Integrated optics; Optical amplifiers; Optical frequency conversion; Optical pumping; Optical variables measurement; Ultrafast optics; Terahertz source; nano-antennas; nanostructures; photoconductivity; plasmonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium (IMS), 2015 IEEE MTT-S International

Conference_Location

Phoenix, AZ

Type

conf

DOI

10.1109/MWSYM.2015.7167033

Filename

7167033