2 MODIFIED Z-SCAN METHODS FOR DETERMINATION OF NONLINEAR-OPTICAL INDEX WITH ENHANCED SENSITIVITY

被引：29
|
作者：
TIAN, JG
ZANG, WP
ZHANG, GY
机构：
[1] Department of Physics, Nankai University, Tianjin
来源：
OPTICS COMMUNICATIONS | 1994年 / 107卷 / 5-6期
关键词：
D O I：
10.1016/0030-4018(94)90358-1
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two modified Z-scan methods, in which the far-field on-axis aperture in common Z-scan is replaced by an off-axis aperture and a circular board, are suggested for measurements of n2 with enhanced sensitivity. The calculated results show that with the increase of the distance from the off-axis aperture to the axis or the diameter of the circular board, the peak-valley normalised transmittance difference of Z-scan will increase rapidly. Also the Z-scan characteristics with a nonlinear absorption are analyzed.
引用
收藏
页码：415 / 419
页数：5
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