Experimental generation of the longitudinal electric field component on the optical axis with high-numerical-aperture binary axicons

被引：0
|
作者：
Alferov, S. V. [1 ]
Khonina, S. N.
Karpeev, S. V.
Savelyev, D. A.
机构：
[1] Samara State Aerosp Univ, Samara, Russia
来源：
OPTICAL TECHNOLOGIES FOR TELECOMMUNICATIONS 2014 | 2015年 / 9533卷
关键词：
high NA binary axicon; near-field diffraction; longitudinal electrical field component; BEAM;
D O I：
10.1117/12.2180738
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We analytically and numerically show that by introducing the asymmetry into the axicon design it becomes possible to generate the longitudinal electric field (E-field) component on the optical axis for linearly and circularly polarized incident beams. Binary axicons with high numerical aperture (NA) are fabricated in three configurations - axisymmetric and spiral ones, and bi-axicon - by electron beam lithography. Experimental measurements for the near-field diffraction of most common and easy to implement incident beams - linearly and circularly polarized - are conducted. The experimental results agree with the theoretical analysis.
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页数：9
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