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Generation of Bessel Beams at mm- and Sub mm-wavelengths by Binary Optical Elements

  • Y. Z. Yu
  • W. B. Dou
Article

Abstract

In this paper, binary optical elements (BOE’s) are designed for generating Bessel beams at mm- and sub mm- wavelengths. The design tool is to combine a genetic algorithm (GA) for global optimization with a two-dimension finite-difference time-domain (2-D FDTD) method for rigorous electromagnetic computation. The design process for converting a normally incident Gaussian beam into a Bessel beam is described in detail. Numerical results demonstrate that the designed BOE’s can not only successfully produce arbitrary order Bessel beams, but also have higher diffraction efficiencies when compared with amplitude holograms.

Keywords

Bessel beams Millimeter and submillimeter-wave Binary optical elements (BOE’s) Genetic algorithm(GA) Finite-difference time-domain(FDTD) 

Notes

Acknowledgements

This work is supported by the Astronomy United Foundation of National Natural Science Foundation of China, Chinese Academy of Sciences (No. 10778602) and the Natural Science Foundation of Fujian Province of China (No.A0610027).

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.State Key Lab of Millimeter WavesSoutheast UniversityJiangsuChina
  2. 2.School of ScienceQuanzhou Normal UniversityFujianChina

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