Generation of sub-wavelength and super-resolution longitudinally polarized non-diffraction beam using lens axicon

被引：35

作者：

Rajesh, K. B. ^{[1
]}

Anbarasan, P. M. ^{[1
]}

机构：

[1] Periyar Univ, Dept Phys, Salem 636011, India

来源：

CHINESE OPTICS LETTERS | 2008年 / 6卷 / 10期

关键词：

D O I：

10.3788/COL20080610.0785

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is well known that a light spot of sub-wavelength will diverge in all direction. In this letter, A method is presented for generating sub-wavelength (0.44 lambda) longitudinally polarized beam, which propagates without divergence over lengths of about 2 lambda in free space. This is achieved by a high numerical aperture (NA) lens axicon that utilizes spherical aberration to duplicate the performance of an axicon and to create an extended focal line.

引用

收藏

页码：785 / 787

页数：3

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