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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Benz, A. Fasching, G. Deutsch, C. Andrews, A.M. Unterrainer, K. Klang, P. Schrenk, W. Strasser, G. |
| Copyright Year | 2007 |
| Description | Author affiliation: Photonics Inst. & Center for Micro- & Nanostruct., Vienna Univ. of Technol., Vienna (Benz, A.; Fasching, G.; Deutsch, C.; Andrews, A.M.; Unterrainer, K.) |
| Abstract | We present the influence of doping on terahertz quantum-cascade lasers. The active region is based on the longitudinal-optical phonon depopulation of the lower laser state. A linear dependency between the threshold current density and the doping is observed. We contribute that to the fact that quantum-cascade lasers require a sub-band alignment prior to lasing. Non-linear effects like electron-electron scattering or changes in the upper state life time play only a minor role. Concerning the maximum lasing temperature no optimum doping concentration could be found. |
| Starting Page | 949 |
| Ending Page | 950 |
| File Size | 197203 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781424414383 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-02 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronic Engineers, Inc. |
| Subject Keyword | Doping Threshold current Power generation Quantum cascade lasers Solid lasers Nanostructures Submillimeter wave technology Phonons X-ray scattering Temperature |
| Content Type | Text |
| Resource Type | Article |
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