Propagation characteristics of hollow flat-topped Gaussian beam and its application in generating optical cage

被引：0
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作者：
Zaili Chen
Yunfeng Jiang
机构：
[1] Wenzhou Medical University,School of Biomedical Engineering
来源：
Applied Physics B | 2020年 / 126卷
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摘要：
The hollow flat-topped Gaussian beam (HFTGB) is proposed to describe the flat light ring beams. The analytical formula for the propagation of HFTGB through any ABCD system is obtained based on the expansion of hollow Gaussian beams. Based upon this formula, the propagation characteristics of HFTGB are investigated in detail. It is found that both 3D bright spot and dark spot exist in the propagating process, and a perfect optical cage could be created by choosing special parameters. Finally, the HFTGBs are generated in experiment, and the modulation methods for the optical cage are proved.
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