Berry, Christopher W. ; Hashemi, Mohammad R. ; Preu, Sascha ; Lu, Hong ; Gossard, Arthur C. ; Jarrahi, Mona (2014)
Plasmonics enhanced photomixing for generating quasi-continuous-wave frequency-tunable terahertz radiation.
In: Opt. Lett., 39
Article
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. ; Hashemi, Mohammad R. ; Preu, Sascha ; Lu, Hong ; Gossard, Arthur C. ; Jarrahi, Mona |
| Type of entry: | Bibliographie |
| Title: | Plasmonics enhanced photomixing for generating quasi-continuous-wave frequency-tunable terahertz radiation |
| Language: | English |
| Date: | 2014 |
| Publisher: | OSA |
| Journal or Publication Title: | Opt. Lett. |
| Volume of the journal: | 39 |
| URL / URN: | 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. |
| Uncontrolled Keywords: | Photoconductivity; Nanophotonics and photonic crystals ; Plasmonics |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Systems Technology |
| Date Deposited: | 19 Jun 2015 11:51 |
| Last Modified: | 10 Dec 2021 07:13 |
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