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Generation of high-frequency radiation in semiconductor superlattices with suppressed space-charge instabilities | | Kirill N. Alekseev
; Natalia V. Demarina
; Maxim V. Gorkunov
; | | Date: |
9 Mar 2005 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Statistical Mechanics; Pattern Formation and Solitons | cond-mat.mes-hall cond-mat.stat-mech nlin.PS | | Abstract: | We theoretically investigated the scheme allowing to avoid destructive space-charge instabilities and to obtain a strong gain at microwave and THz frequencies in semiconductor superlattice devices. Superlattice is subjected to a microwave field and a generation is achieved at some odd harmonics of the pump frequency. Gain arises because of parametric amplification seeded by harmonic generation. Negative differential conductance (NDC) is not a necessary condition for the generation. For the mode of operation with NDC, a limited space-charge accumulation does not sufficiently reduce the gain. | | Source: | arXiv, cond-mat/0503216 | | Services: | Forum | Review | PDF | Favorites | |
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