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Terahertz Bloch oscillator with a modulated bias

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posted on 24.07.2013 by Timo Hyart, Natalia V. Alexeeva, Jussi Mattas, Kirill Alekseev
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.

History

School

  • Science

Department

  • Physics

Citation

HYART, T. ... et al, 2009. Terahertz Bloch oscillator with a modulated bias. Physical Review Letters, 102 (14), 140405

Publisher

© The American Physical Society

Version

VoR (Version of Record)

Publication date

2009

Notes

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

ISSN

0031-9007

eISSN

1079-7114

Language

en

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