Photoconductivity of an InAs/GaAs self-assembled quantum dot photoconductive THz antenna


A broadband terahertz (THz) source is desirable for applications such as imaging, spectroscopy and security. Towards this, an InAs/GaAs quantum dot (QD) based photoconductive antenna (PCA) is a promising and compact solution for THz generation. Coherent THz radiation in the pulsed and the CW regime has been generated with a QD PCA under a resonant and off-resonant pumps [1, 2]. While photoconductivity of QD materials in mid- and far-IR at lower temperatures has been studied for cryogenic sensors and attributed to interlevel transitions, near-IE interband photoconductivity needs further investigation [3, 4]. In this work, we report on the photoconductive properties of an InAs/GaAs QD PCA pumped by a broadly-tunable InAs/GaAs QD external-cavity diode laser.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Event Title: The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Event Type: Other
Event Dates: 2017-06-25 - 2017-06-29
Uncontrolled Keywords: Electronic, Optical and Magnetic Materials,Mechanics of Materials
ISBN: 9781557528209
Last Modified: 26 Feb 2024 08:08
Date Deposited: 15 Jan 2018 15:00
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2017-06-29
Published Online Date: 2017-06-29
Accepted Date: 2017-06-29
Authors: Yadav, Amit (ORCID Profile 0000-0001-7865-6905)
Gorodetsky, Andrei (ORCID Profile 0000-0001-5440-2185)
Avrutin, Eugene
Fedorova, Ksenia A. (ORCID Profile 0000-0002-2765-9951)
Rafailov, Edik U. (ORCID Profile 0000-0002-4152-0120)



Version: Accepted Version

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