Generation and selection of laser beams represented by a superposition of two angular harmonics

被引:62
作者
Khonina, SN
Kotlyar, VV
Soifer, VA
Jefimovs, K
Turunen, J
机构
[1] Univ Joensuu, Dept Phys, FIN-80101 Joensuu, Finland
[2] Russian Acad Sci, Image Proc Syst Inst, Samara 443001, Russia
关键词
D O I
10.1080/09500340410001648456
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The properties of fields generated by diffractive phase-only optical elements that generate combinations of two angular harmonic fields with different harmonic indices in Fraunhofer and Fresnel regions are investigated theoretically and experimentally. Camomile shaped diffraction patterns are predicted and observed. It is shown that multi-order diffractive phase elements can be used to both generate these beams and to identify the weights of different angular harmonics in a given incident laser beam.
引用
收藏
页码:761 / 773
页数:13
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