Modified Z-scan method for determination of nonlinear refraction of optical materials through the measurement of power-weighted time-averaged beam propagation factor

被引：1

作者：

Dement'ev, A ^{[1
]}

Jovaisa, A ^{[1
]}

Navakas, R ^{[1
]}

机构：

[1] Inst Phys, LT-2063 Vilnius, Lithuania

来源：

LASER-INDUCED DAMAGE IN OPTICAL MATERIALS: 2002 AND 7TH INTERNATIONAL WORKSHOP ON LASER BEAM AND OPTICS CHARACTERIZATION | 2003年 / 4932卷

关键词：

beam propagation factor; nonlinear refractive index; pulse shape; Z-scan;

D O I：

10.1117/12.472481

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We demonstrate the possibility of extension of the open aperture Z-scan technique to measurement of nonlinear refractive indices for self-phase modulation and two-color cross-phase modulation of optical materials by measurement of power-weighted time-averaged propagation factor <M-2(t)> of the beam after the sample. The influence of the temporal shape of the pulse is investigated for two cases: when the pulse peak intensity at the beam waist is known, or when the total energy of the pulse and the duration of the correlation function are known only. Numerical calculations show that the determined values of refraction indices might vary noticeably if the proper pulse shape is not taken into account.

引用

页码：286 / 296

页数：11