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Terahertz Bloch oscillator with a modulated bias
journal contribution
posted on 2013-07-24, 12:35 authored by Timo Hyart, Natalia V. Alexeeva, Jussi Mattas, Kirill AlekseevElectrons performing Bloch oscillations in an energy band of a dc-biased superlattice in the presence of weak dissipation can potentially generate THz fields at room temperature. The realization of such a Bloch oscillator is a long-standing problem due to the instability of a homogeneous electric field in conditions of negative differential conductivity. We establish the theoretical feasibility of stable THz gain in a long superlattice device in which the bias is quasistatically modulated by microwave fields. The modulation waveforms must have at least two harmonics in their spectra.
History
School
- Science
Department
- Physics
Citation
HYART, T. ... et al, 2009. Terahertz Bloch oscillator with a modulated bias. Physical Review Letters, 102 (14), 140405Publisher
© The American Physical SocietyVersion
- VoR (Version of Record)
Publication date
2009Notes
This article was published in the journal, Physical Review Letters [© The American Physical Society]. It is also available at: http://dx.doi.org/10.1103/PhysRevLett.102.140405ISSN
0031-9007eISSN
1079-7114Publisher version
Language
- en