Scattering of a Gaussian beam by stepped index Luneberg lens

被引：4
|
作者：
Sakurai, H
Kozaki, S
机构：
[1] Gunma Coll Technol, Maebashi, Gumma 3718530, Japan
[2] Gunma Univ, Fac Engn, Kiryu, Gumma 3768515, Japan
来源：
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES | 2001年 / 22卷 / 11期
关键词：
electromagnetic scattering; stepped index Luneberg lens; focusing effect; Gaussian beam;
D O I：
10.1023/A:1015008531724
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The scattering and focusing characteristics of a Gaussian beam with phase distribution is studied by a stepped index Luneberg lens. A model experiment was performed using a six-layer spherical lens. Two kinds of beams, that is, broad and narrow beam are examined for the incident Gaussian beam. We find that focusing effect of a narrow beam is wholly lower than that of a broad beam. The focal point is also shifted toward outer of sphere because of phase lag for the beam source. The spot size equals almost the wavelength for the various beam parameters.
引用
收藏
页码：1653 / 1668
页数：16
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