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Terahertz Parametric Gain in Semiconductor Superlattices | | Timo Hyart
; Alexey V. Shorokhov
; Kirill N. Alekseev
; | | Date: |
20 Jun 2007 | | Abstract: | We consider a high-frequency response of electrons in a single miniband of
superlattice subject to dc and ac electric fields. Action of ac electric field
causes oscillations of electron’s effective mass in miniband, which result in a
parametric resonance. We have established a theoretical feasibility of
phase-sensitive parametric amplification at the resonance. The parametric
amplification does not require operation in conditions of negative differential
conductance. Therefore a formation of destructive domains of high electric
field inside the superlattice can be prevented. Here we concentrate on the
parametric up- and down-conversion of electromagnetic radiation from available
frequencies to desirable THz frequency range. | | Source: | arXiv, arxiv.0706.2967 | | Services: | Forum | Review | PDF | Favorites | |
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