Mohandas, RA, Freeman, JR, Rosamond, MC et al. (8 more authors) (2016) Terahertz emission mechanism and laser excitation position dependence of nano-grating electrode photomixers. In: 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 25-30 Sep 2016, Copenhagen, Denmark. IEEE . ISBN 9781467384858
Abstract
The emission mechanism of continuous wave (CW) terahertz (THz) photomixers that make use of nanostructured gratings (NSGs) is studied. Two different photomixer designs, based on a single-sided NSG and a double-sided NSG, embedded in the same antenna design and fabricated on an Fe doped InGaAsP substrate, are characterized with ∼1550 nm excitation. They are shown to exhibit similar performance in terms of spectral bandwidth and emitted power. The emission is mapped in terms of the laser excitation position, from which the emission mechanism is assigned to an enhanced optical electric field at the tips of the NSGs.
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Copyright, Publisher and Additional Information: | © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||||
Keywords: | Electrodes; Laser excitation; Gratings; Optical fibers; Antennas; Substrates; Photonics | ||||||||||
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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) | ||||||||||
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Depositing User: | Symplectic Publications | ||||||||||
Date Deposited: | 06 Jan 2017 12:27 | ||||||||||
Last Modified: | 16 Jan 2018 03:44 | ||||||||||
Published Version: | https://doi.org/10.1109/IRMMW-THz.2016.7758713 | ||||||||||
Status: | Published | ||||||||||
Publisher: | IEEE | ||||||||||
Identification Number: | https://doi.org/10.1109/IRMMW-THz.2016.7758713 |