Hatem, O, Freeman, JR, Cunningham, JE et al. (5 more authors) (2016) Generation of Terahertz Radiation from Fe-doped InGaAsP Using 800 nm to 1550 nm Pulsed Laser Excitation. Journal of Infrared, Millimeter and Terahertz Waves, 37 (5). pp. 415-425. ISSN 1866-6892
Abstract
We demonstrate efficient generation of terahertz (THz) frequency radiation by pulsed excitation, at wavelengths between 800 and 1550 nm, of photoconductive (PC) switches fabricated using Fe-doped InGaAsP wafers, grown by metal organic chemical vapor deposition (MOCVD). Compared to our previous studies of Fe-doped InGaAs wafers, Fe:InGaAsP wafers exhibited five times greater dark resistivity to give a value of 10 kΩ cm, and Fe:InGaAsP PC switches produced five times higher THz power emission. The effect of Fe-doping concentration (between 1E16 and 1.5E17 cm−3) on optical light absorption (between 800 and 1600 nm), on resistivity, and on THz emission is also discussed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) The Author(s) 2015. This Open Access article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
Keywords: | Terahertz waves; Photo-emission; Photoconductive switches; Fe:InGaAsP; Fe:InGaAs; MOCVD |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EU - European Union 247375 Royal Society WM110032 EPSRC EP/J017671/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Jan 2016 15:10 |
Last Modified: | 12 Feb 2019 13:08 |
Published Version: | http://dx.doi.org/10.1007/s10762-015-0231-z |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1007/s10762-015-0231-z |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:93201 |