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Plasmonics enhanced photomixing for generating quasi-continuous-wave frequency-tunable terahertz radiation

Berry, Christopher W. and Hashemi, Mohammad R. and Preu, Sascha and Lu, Hong and Gossard, Arthur C. and Jarrahi, Mona :
Plasmonics enhanced photomixing for generating quasi-continuous-wave frequency-tunable terahertz radiation.
[Online-Edition: http://dx.doi.org/10.1364/OL.39.004522]
In: Opt. Lett., 39 pp. 4522-4524.
[Article] , (2014)

Official URL: http://dx.doi.org/10.1364/OL.39.004522

Abstract

We experimentally demonstrate an order of magnitude enhancement in the quasi-continuous-wave radiated power from a photomixer with plasmonic contact electrodes in comparison with an analogous conventional photomixer without plasmonic contact electrodes in the 0.25-2.5THz frequency range when pumped at an optical wavelength of 1550 nm. The significant efficiency enhancement results from the unique capability of the plasmonic contact electrodes to reduce the average transport path of photocarriers to the device contact electrodes, increasing the ultrafast photocurrent that drives the terahertz antenna.

Item Type: Article
Erschienen: 2014
Creators: Berry, Christopher W. and Hashemi, Mohammad R. and Preu, Sascha and Lu, Hong and Gossard, Arthur C. and Jarrahi, Mona
Title: Plasmonics enhanced photomixing for generating quasi-continuous-wave frequency-tunable terahertz radiation
Language: English
Abstract:

We experimentally demonstrate an order of magnitude enhancement in the quasi-continuous-wave radiated power from a photomixer with plasmonic contact electrodes in comparison with an analogous conventional photomixer without plasmonic contact electrodes in the 0.25-2.5THz frequency range when pumped at an optical wavelength of 1550 nm. The significant efficiency enhancement results from the unique capability of the plasmonic contact electrodes to reduce the average transport path of photocarriers to the device contact electrodes, increasing the ultrafast photocurrent that drives the terahertz antenna.

Journal or Publication Title: Opt. Lett.
Volume: 39
Publisher: OSA
Uncontrolled Keywords: Photoconductivity; Nanophotonics and photonic crystals ; Plasmonics
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Terahertz Systems Technology
18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Date Deposited: 19 Jun 2015 11:51
Official URL: http://dx.doi.org/10.1364/OL.39.004522
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