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Vectorial structural characteristics of four-petal Gaussian beams in the far field

Published online by Cambridge University Press:  23 April 2010

J. Li ,
Y. Chen ,
Y. Xin ,
M. Zhou  and
S. Xu
J. Li*
Affiliation:
Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China
Y. Chen
Affiliation:
Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China
Y. Xin
Affiliation:
Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China
M. Zhou
Affiliation:
Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China
S. Xu
Affiliation:
Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China
*
[email protected]
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Abstract

Based on the vector angular spectrum theory of electromagnetic waves and the method of stationary phase, analytical vector structures of four-petal Gaussian beams (FPGB) in the far field are derived. The energy flux for the TE term, TM term and the whole beam are represented and illustrated with numerical examples. Effects of beam orders and paraxial degrees on energy flux distributions are discussed in detail, and the corresponding analytical explanations are also given. These results may provide a new approach to manipulate other higher-order laser beams in the far field.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 50 , Issue 3 , June 2010 , 30702
Copyright
© EDP Sciences, 2010

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