Terahertz radiation enhancement through use of plasmonic photomixers

Author

Berry, Christopher W. ; Hashemi, Mohammed R. ; Jarrahi, Mona ; Preu, S. ; Lu, Hai-Han ; Gossard, Arthur C.

Author_Institution

Electr. Eng. & Comput. Sci. Dept., Univ. of Michigan, Ann Arbor, MI, USA

fYear

2014

fDate

6-11 July 2014

Firstpage

1604

Lastpage

1605

Abstract

We demonstrate significant enhancement in terahertz radiation power from a photomixer that incorporates plasmonic contact electrodes. The plasmonic contact electrodes reduce the average transport path of photocarriers to the contact electrodes, increasing the ultrafast photocurrent that drives the terahertz antenna. We experimentally demonstrate an order of magnitude higher radiated power from a photomixer with plasmonic contact electrodes in comparison with an analogous photomixer without plasmonic contact electrodes in the 0.25-2.5 THz frequency range.

Keywords

electrodes; metamaterial antennas; photoconductivity; plasmonics; terahertz metamaterials; terahertz waves; frequency 0.25 THz to 2.5 THz; photocarriers; plasmonic contact electrodes; plasmonic photomixers; terahertz antenna; terahertz radiation power enhancement; ultrafast photocurrent; Electrodes; Optical amplifiers; Optical device fabrication; Optical fibers; Optical pumping; Plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6905128

Filename

6905128