Multi-focus spot generated by radial vector beam with multivortex phase
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    Abstract:

    In this paper, a theoretical and simulated experimental study on the tight focusing properties of radial vector Gaussian beam loaded with symmetrical four vortex phases is presented. This is the process:loading a symmetrical four vortex phase in the radial vector optical field, adjusting the distance between the singularity of the vortex phase center and the optical field center, and then compact focusing based on the Vector diffraction theory proposed by Richards and Wolf. The results prove that, when the distance between the singularity of the vortex phase center and the optical field center is 0.62w, five focal spots can be obtained. And the energy distribution of the focal spot can be regulated by adjusting the distance between the vortex phase. This research can be applied to the area of ultra-fast laser micro machining, multi-particle trapping, optical tweezers and etc.

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YU Nana, XI Sixing, ZHANG ChunYuan. Multi-focus spot generated by radial vector beam with multivortex phase[J].,2018,35(2):108-112

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  • Received:April 20,2018
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  • Online: June 26,2018
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