Determination of the Dispersion of the Principal Refractive Indices for Birefringent Polypropylene Films

被引：1
|
作者：
Bezruchenko, V. S. [1 ]
Murauski, An. A. [1 ]
Muravsky, Al. A. [1 ]
机构：
[1] Natl Acad Sci Belarus, Inst Chem New Mat, Minsk 220141, BELARUS
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2014年 / 81卷 / 03期
关键词：
dispersion; anisotropy; interference; circular polarizer; compensating films; phase retarder;
D O I：
10.1007/s10812-014-9957-y
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
We present a novel method for determining the dispersion of the refractive indices of birefringent films, based on treatment of transmission spectra, in which we observe interference of light. The dispersion curves n (x) (lambda) and n (y) (lambda) were determined by treatment of transmission spectra obtained for normal incidence of radiation on a P2-25 birefringent fi lm, and n (z) (lambda) was determined for oblique incidence of radiation. From the results of determination of the dispersions of the principal refractive indices of a birefringent P2-25 polypropylene film (Mogilevkhimvolokno OAO, Belarus), we established that the sample is a negative biaxial retarder with Nz = 2.9.
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页码：476 / 482
页数：7
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