DISPERSION OF THE 3RD-ORDER OPTICAL NONLINEARITY OF C-60 - A 3RD-HARMONIC GENERATION STUDY

被引：154
|
作者：
METH, JS
VANHERZEELE, H
WANG, Y
机构：
[1] Central Research and Development, Du Pont Co., Wilmington, DE 19880-0356
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 197卷 / 1-2期
关键词：
D O I：
10.1016/0009-2614(92)86016-B
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the \chi(3)(-3-omega; omega, omega, omega)\ of a thin film of polycrystalline C60 on glass measured over the fundamental energy range of 0.52-1.18 eV. The dispersion clearly shows a three-photon resonance at HBAR-omega=0.94 eV, whose third-harmonic energy corresponds to the dipole allowed transition at 2.8 eV in the solid C60. The dispersion can be fit by a two-level model, and a good correlation exists between the nonlinearity and the linear optical absorption spectrum. Away from resonance, \chi(3)(-3-omega; omega, omega, omega) \= (4.1 +/- 0.6) x 10(-12) esu, while at the peak, \chi(3)(-3-omega; omega, omega, omega)\ = (2.7 +/- 0.4) x 10(-11) esu.
引用
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页码：26 / 31
页数：6
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