SCATTERING OF AN OFF-AXIS GAUSSIAN-BEAM BY A DIELECTRIC CYLINDER COMPARED WITH A RIGOROUS ELECTROMAGNETIC APPROACH

被引:56
|
作者
ZIMMERMANN, E [1 ]
DANDLIKER, R [1 ]
SOULI, N [1 ]
KRATTIGER, B [1 ]
机构
[1] CIBA LTD,ANALYT RES,CH-4002 BASEL,SWITZERLAND
关键词
D O I
10.1364/JOSAA.12.000398
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
For the development of new kinds of refractive-index sensors for capillary electrophoresis, we investigated the scattering of an off-axis incident Gaussian beam by a homogeneous dielectric cylinder at normal incidence. The numerical calculations are based on the exact solution of the Helmholtz equation in circular cylindrical results even when the beam dimensions are of the order of the wavelength of light and when the beam diameter is greater than the diameter of the dielectric cylinder. This rigorous electromagnetic treatment is verified by experimental measurements for cylinders with diameters from 5 to 100 mu m.
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页码:398 / 403
页数:6
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