Theory of parametric amplification in in superlattices
Mesoscale and Nanoscale Physics
2007-06-13 v3 Statistical Mechanics
Abstract
We consider a high-frequency response of electrons in a single miniband of superlattice subject to dc and ac electric fields. We show that Bragg reflections in miniband result in a parametric resonance which is detectable using ac probe field. We establish theoretical feasibility of phase-sensitive THz amplification at the resonance. The parametric amplification does not require operation in conditions of negative differential conductance. This prevents a formation of destructive high-field domains inside the superlattice.
Cite
@article{arxiv.cond-mat/0612461,
title = {Theory of parametric amplification in in superlattices},
author = {Timo Hyart and Alexey V. Shorokhov and Kirill N. Alekseev},
journal= {arXiv preprint arXiv:cond-mat/0612461},
year = {2007}
}
Comments
4 pages, 4 figures. V2: typo in axis caption of fig 2 is corrected. V3: typo in ref 9 is corrected, stylistic changes in the main text, new refs 18-21 are added, and change in the title