Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals

Sirkeli, V. P. ; Yilmazoglu, Oktay ; Ong, D. S. ; Preu, Sascha ; Küppers, F. ; Hartnagel, Hans L. :
Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals.
[Online-Edition: http://ieeexplore.ieee.org/abstract/document/7968341/]
In: IEEE Transactions on Electron Devices, 64 (8) pp. 3482-3488. ISSN 1557-9646
[Artikel], (2017)

Offizielle URL: http://ieeexplore.ieee.org/abstract/document/7968341/

Kurzbeschreibung (Abstract)

We report on the results of a numerical study of quantum transport in ZnSe-based resonant-tunneling diodes (RTDs) and quantum cascade oscillators (QCOs) with fixed and unequal barrier heights. It is found that the negative differential resistance exists up to room temperature in the current-voltage characteristics of the RTD and QCO devices with unequal barrier heights. Further, we demonstrate that QCOs with unequal barrier heights have a better frequency and power performance characteristics compared with RTDs and are more beneficial for high-power terahertz generation at room temperature. For the best QCO device with 100 periods of quantum cascading, a maximum output power of ~7-9 μW for the operating frequency range from 0.1 to ~6 THz at room temperature was achieved.

Typ des Eintrags:	Artikel
Erschienen:	2017
Autor(en):	Sirkeli, V. P. ; Yilmazoglu, Oktay ; Ong, D. S. ; Preu, Sascha ; Küppers, F. ; Hartnagel, Hans L.
Titel:	Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals
Sprache:	Englisch
Kurzbeschreibung (Abstract):	We report on the results of a numerical study of quantum transport in ZnSe-based resonant-tunneling diodes (RTDs) and quantum cascade oscillators (QCOs) with fixed and unequal barrier heights. It is found that the negative differential resistance exists up to room temperature in the current-voltage characteristics of the RTD and QCO devices with unequal barrier heights. Further, we demonstrate that QCOs with unequal barrier heights have a better frequency and power performance characteristics compared with RTDs and are more beneficial for high-power terahertz generation at room temperature. For the best QCO device with 100 periods of quantum cascading, a maximum output power of ~7-9 μW for the operating frequency range from 0.1 to ~6 THz at room temperature was achieved.
Titel der Zeitschrift, Zeitung oder Schriftenreihe:	IEEE Transactions on Electron Devices
Band:	64
(Heft-)Nummer:	8
Verlag:	IEEE
Freie Schlagworte:	microwave oscillatorsm II-VI semiconductor materials, quantum cascade lasers, resonant tunnelling diodes, Terahertz
Fachbereich(e)/-gebiet(e):	18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik > Photonik und Optische Nachrichtentechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik > Terahertz Systems
Hinterlegungsdatum:	28 Mär 2018 09:50
Offizielle URL:	http://ieeexplore.ieee.org/abstract/document/7968341/
ID-Nummer:	doi:10.13039/100005156
Sponsoren:	Alexander von Humboldt Foundation
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