Abstract
The nonlinear absorption of a strong electromagnetic wave caused by electrons conflned in cylindrical quantum wires is theoretically studied by using the quantum kinetic equation for electrons. An analytic expression of the nonlinear absorption coe-cient of a strong electromagnetic wave caused by electrons conflned in a cylindrical quantum wire with a parabolic potential for electron-optical phonon scattering is obtained. The dependence of the nonlinear absorption coe-cient on the intensity E0 and the frequency › of the external strong electromagnetic wave, the temperature T of the system and the radius R of the wires is strong and nonlinear. Analytic expression is numerically calculated and discussed for a GaAs=GaAsAl quantum wire. The results are compared with those for normal bulk semiconductors and quantum wells to show the difierences.
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