ELECTRO-OPTIC COEFFICIENTS OF UREA

被引：57
作者：
MORRELL, JA
ALBRECHT, AC
LEVIN, KH
TANG, CL
机构：
[1] CORNELL UNIV, DEPT APPL PHYS, ITHACA, NY 14853 USA
[2] CORNELL UNIV, DEPT ELECT ENGN, ITHACA, NY 14853 USA
来源：
JOURNAL OF CHEMICAL PHYSICS | 1979年 / 71卷 / 12期
关键词：
D O I：
10.1063/1.438279
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：
The two independent electro-optic coefficients of crystalline urea, r 63 and r41, are determined experimentally using a voltage modulation technique. The results are compared with theoretical values obtained by direct summation over CNDO/S generated electronic states in a perturbation theory based expression for nonlinear optical coefficients. A further comparison is made with the predicted results of an anharmonic oscillator model for nonlinear optical processes. The results obtained by all three methods, after proper internal field corrections, agree within the limitations of the theoretical calculations and the margins of experimental error. © 1979 American Institute of Physics.
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页码：5063 / 5068
页数：6
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