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

Sirkeli, V. P. and Yilmazoglu, Oktay and Ong, D. S. and Preu, Sascha and Küppers, F. and Hartnagel, Hans L. (2017):
Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals.
In: IEEE Transactions on Electron Devices, IEEE, pp. 3482-3488, 64, (8), ISSN 1557-9646, DOI: 10.1109/TED.2017.2718541, [Online-Edition: http://ieeexplore.ieee.org/abstract/document/7968341/],
[Article]

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.

Item Type: Article
Erschienen: 2017
Creators: Sirkeli, V. P. and Yilmazoglu, Oktay and Ong, D. S. and Preu, Sascha and Küppers, F. and Hartnagel, Hans L.
Title: Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals
Language: English
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.

Journal or Publication Title: IEEE Transactions on Electron Devices
Volume: 64
Number: 8
Publisher: IEEE
Uncontrolled Keywords: microwave oscillatorsm II-VI semiconductor materials, quantum cascade lasers, resonant tunnelling diodes, Terahertz
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Microwave Electronics
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Photonics and Optical Communications
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Terahertz Systems Technology
Date Deposited: 28 Mar 2018 09:50
DOI: 10.1109/TED.2017.2718541
Official URL: http://ieeexplore.ieee.org/abstract/document/7968341/
Identification Number: doi:10.13039/100005156
Funders: Alexander von Humboldt Foundation
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