Electron--Phonon Interactions on the Optical Kerr Effect in a Quantum Disc
GUO Kang-Xian
Department of Physics, School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510405
Electron--Phonon Interactions on the Optical Kerr Effect in a Quantum Disc
GUO Kang-Xian
Department of Physics, School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510405
关键词 ：
78.20.Fm ,
78.67.Hc ,
71.38.-k
Abstract ： The optical Kerr effect in a quantum disc is investigated with the density-matrix approach, most emphasis is devoted to the electron--phonon interactions on the optical Kerr effect. The numerical results are presented with characteristic parameters of a GaAs quantum disc. It is shown that the optical Kerr effect increases as the disc thickness D decreases. LO-phonons impose greater influence on the optical Kerr effect than SO-phonons. The smaller the disc thickness D, the sharper the peak, and the larger the peak intensity. When the disc thickness is greater than 30, the peak will disappear gradually.
Key words ：
78.20.Fm
78.67.Hc
71.38.-k
出版日期: 2005-11-01
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2005, Vol. 22 
