Terahertz emission from square wells in a longitudinal electric field |
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| Authors: | L E Vorob’ev D V Donetskii D A Firsov E B Bondarenko G G Zegrya E Towe |
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| Institution: | (1) St. Petersburg State Technical University, 195251 St. Petersburg, Russia;(2) A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia;(3) Thornton Hall, University of Virginia, Charlottesville, VA 22903-2442, USA |
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| Abstract: | Terahertz emission accompanying heating of two-dimensional electrons by a strong electric field applied along size-quantized
GaAs/AlGaAs layers is observed and investigated. The emission is due to indirect optical transitions of hot electrons in the
bottom size-quantization band. The experimentally obtained emission spectra are compared with the spectra calculated taking
into account scattering of electrons by optical phonons, impurities, and interfacial roughness and electron-electron scattering.
Satisfactory agreement is obtained. The temperature of the hot electrons is determined from a comparison of the spectra.
Pis’ma Zh. éksp. Teor. Fiz. 67, No. 7, 507–511 (10 April 1998) |
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