Superheterodyne amplification of sub-millimeter electromagnetic waves in an n-GaAs film |
| |
| Authors: | S Koshevaya V GrimalskyJ Escobedo-Alatorre M Tecpoyotl-Torres |
| |
| Affiliation: | a Research Center of Applied Sciences and Engineering (CIICAp), Autonomous University of Morelos (UAEM), Av. Universidad No. 1001, Z.P. 62210, Cuernavaca, Morelos, Mexico
b National Institute for Astrophysics, Optics, and Electronics (INAOE), P.O. Box 51 and 216, Z.P. 72000, Puebla, Mexico |
| |
| Abstract: | A superheterodyne amplification of sub-millimeter electromagnetic waves in GaAs due to the negative differential mobility is analyzed. The nonlinearity arises from the modulation of concentration, due to a space charge wave, and from the ponderomotive force, due to electromagnetic waves. The case of resonant interaction of two traveling counter propagating electromagnetic waves and the space charge wave in a thin n-GaAs film placed into a dielectric waveguide is considered. The case of 2D electron gas is also analyzed. The simulation of this nonlinear interaction shows a certain increment of the amplification. |
| |
| Keywords: | Negative differential mobility Superheterodyne amplification n-GaAs film |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
