Towards realisation of an efficient continuous wave terahertz source using quantum dot devices


A continuous wave (CW) terahertz source emitting in a broad frequency range (1-5THz) is promising towards achieving a compact, high power, finely tunable, room temperature terahertz generation system which will be of immense significance towards the realisation of terahertz applications in spectroscopy, communication, sensing, and imaging among others. We have demonstrated a tunable continuous-wave Quantum Dot external cavity laser emitting at two frequencies for continuous wave terahertz emission in a Quantum dot Photoconductive Antenna (PCA). The external cavity QD Laser has been characterised with tunability of 152nm and a tuning range from 1143nm -1295.8nm that lies within the THz difference frequency for the generation of THz radiation from QD based PCAs.

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Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Copyright 2019 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. Funding: Engineering and Physical Sciences Research Council (EPSRC) - grant EP/R024898/1.
Uncontrolled Keywords: Continuous wave operation,Photoconductive Antennas,Quantum dots,Terahertz emitters,Terahertz radiation,Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Computer Science Applications,Applied Mathematics,Electrical and Electronic Engineering
Publication ISSN: 1996-756X
Last Modified: 18 Mar 2024 08:32
Date Deposited: 16 Sep 2019 11:49
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Related URLs: https://www.spi ... 12.2530730.full (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference article
Published Date: 2019-09-06
Accepted Date: 2019-08-01
Authors: Bello, Nasir G.
Smirnov, Semen (ORCID Profile 0000-0002-8562-2452)
Gorodetsky, Andrei
Rafailov, Edik U. (ORCID Profile 0000-0002-4152-0120)



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