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Article Abstract
This paper focuses on the focusing pattern of the Laguerre-Gaussian (LG) beam with polarization mixing helical-conical phase modulation, which is based on the vector diffraction theory. The results show that the topological charge number can sensitively control the intensity of the intensity peaks. The focal spot will split along the optical axis under different polarization parameters . When =1, the spot position and the peak intensity can be modulated by changing the polarization parameter . The truncation parameter makes the focusing spot form an optical trap. By adjusting the eccentricity parameter , the opening direction of the optical trap can be well controlled. These results may be helpful in optical applications such as optical manipulation, optical focusing, and optical information transmission.
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| http://dx.doi.org/10.1364/JOSAA.492633 | DOI Listing |
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