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Title: Terahertz Bloch oscillator with a modulated bias
Authors: Hyart, Timo
Alexeeva, Natalia V.
Mattas, Jussi
Alekseev, Kirill N.
Issue Date: 2009
Publisher: © The American Physical Society
Citation: HYART, T. ... et al, 2009. Terahertz Bloch oscillator with a modulated bias. Physical Review Letters, 102 (14), 140405
Abstract: Electrons 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.
Description: 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.102.140405
Version: Published
DOI: 10.1103/PhysRevLett.102.140405
URI: https://dspace.lboro.ac.uk/2134/12814
Publisher Link: http://dx.doi.org/10.1103/PhysRevLett.102.140405
ISSN: 0031-9007
Appears in Collections:Published Articles (Physics)

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