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, 64 (8), pp. 3482-3488. IEEE, ISSN 1557-9646,
DOI: 10.1109/TED.2017.2718541,
[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 |
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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 |
Journal 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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