| The nonlinear absorption of a strong electromagnetic waves caused by
confined electrons in a cylindrical quantum wire |
| Tác giả hoặc Nhóm tác giả: Hoang Dinh Trien and Nguyen Vu Nhan |
| Nơi đăng: Journal of USA-Progress In Electromagnetics Research Letters; Số: 20;Từ->đến trang: 87-96;Năm: 2011 |
| Lĩnh vực: Tự nhiên; Loại: Bài báo khoa học; Thể loại: Quốc tế |
| TÓM TẮT |
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| ABSTRACT |
The nonlinear absorption of a strong electromagnetic
wave caused by electrons confined in cylindrical quantum wires
is theoretically studied by using the quantum kinetic equation
for electrons. An analytic expression of the nonlinear absorption
coefficient of a strong electromagnetic wave caused by electrons
confined in a cylindrical quantum wire with a parabolic potential for
electron-optical phonon scattering is obtained. The dependence of the
nonlinear absorption coefficient 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 differences.
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