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- Title
Parametric Interaction of Space-Charge Waves in Asymmetric Thin-Film n-GaAs Structures.
- Authors
Barybin, A. A.; Mikhailov, A. I.
- Abstract
Based on a theory developed previously, parametric interaction between space-charge waves in thin-film semiconductor structures with negative differential conductivity is analyzed. The analysis is carried out in the approximation that the drift flux of charge carriers has a rigid boundary and under the assumption that the frequency of low-frequency pumping equals the cutoff frequency f[SUBc] of waves being amplified (f[SUBc] roughly equals 30 GHz in our case). For asymmetric structures, a general multimode set of coupled equations is reduced to a pair of differential equations for the excitation amplitudes of the fundamental space-charge mode at the signal frequency ω[SUBs] and idler frequency ω[SUBi] = ω[SUBs] - ω[SUBp]. The equations are solved numerically for n -GaAs-based structures, and the solution obtained is discussed.
- Subjects
SEMICONDUCTORS; THIN films; ELECTRIC conductivity
- Publication
Technical Physics, 2003, Vol 48, Issue 6, p761
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/1.1583832