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

Nasir G. Bello; Semen Smirnov; Andrei Gorodetsky; Edik U. Rafailov; Manijeh Razeghi; Alexei N. Baranov; Miriam S. Vitiello

doi:10.1117/12.2530730

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

Nasir G. Bello, Semen Smirnov, Andrei Gorodetsky, Edik U. Rafailov, Manijeh Razeghi (Editor), Alexei N. Baranov (Editor), Miriam S. Vitiello (Editor)

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Article number	111240G
Journal	Proceedings of SPIE - International Society for Optical Engineering
Volume	11124
DOIs	https://doi.org/10.1117/12.2530730
Publication status	Published - 6 Sept 2019
Event	Terahertz Emitters, Receivers, and Applications X - San Diego, United States Duration: 11 Aug 2019 → 15 Aug 2019

Bibliographical note

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.

Keywords

Continuous wave operation
Photoconductive Antennas
Quantum dots
Terahertz emitters
Terahertz radiation

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abstract = "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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note = "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.; Terahertz Emitters, Receivers, and Applications X ; Conference date: 11-08-2019 Through 15-08-2019",

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AU - Gorodetsky, Andrei

AU - Rafailov, Edik U.

A2 - Razeghi, Manijeh

A2 - Baranov, Alexei N.

A2 - Vitiello, Miriam S.

N1 - 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.

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KW - Continuous wave operation

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KW - Terahertz radiation

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

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Keywords

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