Electron-phonon interaction and nonlinear optical susceptibility of polymer

被引：0

作者：

Fu, Rongtang ^{[1
]}

Li, Lieming ^{[1
]}

Sun, Xin ^{[1
]}

Fu, Rouli ^{[1
]}

机构：

[1] Univ of Science and Technology of, China, Hefei, China

来源：

Wuli Xuebao/Acta Physica Sinica | 1993年 / 42卷 / 03期

关键词：

Electrons - Nonlinear optics - Optical properties - Phonons;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The third harmonic generation spectrum (THG) of trans-polyacetylene exhibits two peaks at 0.6 eV and 0.9 eV respectively. None of the existing theories can give a quantitatively satisfactory interpretation. By considering properly the excitation-dependent damping, one can get the second peak at 0.9 eV. The damping of excited states depicted in this paper due to electron-phonon interaction of polymer varies with the excited states. According to this damping, the theoretical results of THG agree with the observed spectrum very well.

引用

页码：422 / 430