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Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient 被引量:2
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作者 Lei Han Shuxia Qi +3 位作者 Sheng Liu Peng Li Huachao Cheng Jianlin Zhao 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第9期129-135,共7页
Based on angular amplitude modulation of orthogonal base vectors in common-path interference method, we propose an interesting type of hybrid vector beams with unprecedented azimuthal polarization gradient and demonst... Based on angular amplitude modulation of orthogonal base vectors in common-path interference method, we propose an interesting type of hybrid vector beams with unprecedented azimuthal polarization gradient and demonstrate in experiment. Geometrically, the configured azimuthal polarization gradient is indicated by intriguing mapping tracks of angular polarization states on Poincaré sphere, more than just conventional circles for previously reported vector beams. Moreover, via tailoring relevant parameters, more special polarization mapping tracks can be handily achieved. More noteworthily, the designed azimuthal polarization gradients are found to be able to induce azimuthally non-uniform orbital angular momentum density, while generally uniform for circle-track cases, immersing in homogenous intensity background whatever base states are. These peculiar features may open alternative routes for new optical effects and applications. 展开更多
关键词 hybrid vector beam polarization gradient polarization mapping track orbital angular momentum density
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