Sirkeli, V. P. ; Yilmazoglu, Oktay ; Ong, D. S. ; Preu, Sascha ; Küppers, F. ; 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 |
|---|---|
| Erschienen: | 2017 |
| Creators: | Sirkeli, V. P. ; Yilmazoglu, Oktay ; Ong, D. S. ; Preu, Sascha ; Küppers, F. ; 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 (IMP) > Photonics and Optical Communications 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > 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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