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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 |
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| Cite this article: |
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GUO Kang-Xian 2005 Chin. Phys. Lett. 22 2953-2956 |
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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.
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| Keywords:
78.20.Fm
78.67.Hc
71.38.-k
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Published: 01 November 2005
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