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.

Publication DOI:
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences
Engineering & Applied Sciences > Aston Institute of Photonics Technology
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
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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 ( 0000-0002-8562-2452)
Gorodetsky, Andrei
Rafailov, Edik U. ( 0000-0002-4152-0120)



Version: Published Version

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