High-Speed Modulation of a Terahertz Quantum Cascade Laser Using Coherent Acoustic Phonon Pulses

Dunn, A orcid.org/0000-0002-7369-1469, Poyser, C, Dean, P orcid.org/0000-0002-3950-4359 et al. (11 more authors) (2019) High-Speed Modulation of a Terahertz Quantum Cascade Laser Using Coherent Acoustic Phonon Pulses. In: Proceedings of the 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019). 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019), 01-06 Sep 2019, Paris, France. IEEE ISBN 978-1-5386-8285-2

Abstract

We demonstrate a new method for high-speed modulation of terahertz emission and electronic transport of a Ga(Al)As quantum cascade laser using coherent acoustic phonon pulses. The modulation, which is on the order of 6%, can be partially explained by a perturbation-theory analysis. The <; 1 ns rise time of the modulation is dominated by parasitic device impedance in our experiment, however, the fast transit of phonons through the QCL heterostructure imply modulation rates > 100 GHz are possible.

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Item Type:	Proceedings Paper
Authors/Creators:	Dunn, A https://orcid.org/0000-0002-7369-1469 Poyser, C Dean, P https://orcid.org/0000-0002-3950-4359 Demic, A https://orcid.org/0000-0003-1335-6156 Valavanis, A https://orcid.org/0000-0001-5565-0463 Indjin, D https://orcid.org/0000-0002-9121-9846 Salih, M Kundu, I https://orcid.org/0000-0002-3564-1903 Li, L https://orcid.org/0000-0003-4998-7259 Akimov, A Davies, G https://orcid.org/0000-0002-1987-4846 Linfield, E Cunningham, J https://orcid.org/0000-0002-1805-9743 Kent, A
Copyright, Publisher and Additional Information:	© 2019, IEEE. This is an author produced version of a paper to be presented at IRMMW-THz 2019. Uploaded in accordance with the publisher's self-archiving policy. 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:	Quantum cascade lasers; Modulation; Strain; Acoustic pulses; Phonons; Optical pulses
Dates:	Published: 21 October 2019 Published (online): 21 October 2019 Accepted: 29 June 2019
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Physical Chemistry (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds)
Funding Information:	Funder Grant number UK Space Agency Not Known MRC MR/S015833/1 EPSRC EP/M01598X/1 EPSRC EP/P021859/1 EPSRC EP/R00501X/1
Depositing User:	Symplectic Publications
Date Deposited:	04 Jul 2019 08:24
Last Modified:	30 Jun 2020 14:49
Status:	Published
Publisher:	IEEE
Identification Number:	10.1109/IRMMW-THz.2019.8874441
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:147986

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High-Speed Modulation of a Terahertz Quantum Cascade Laser Using Coherent Acoustic Phonon Pulses

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