Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient

doi:10.1088/1674-1056/aba09d

中国物理B ›› 2020, Vol. 29 ›› Issue (9): 94203-094203.doi: 10.1088/1674-1056/aba09d

所属专题： SPECIAL TOPIC — Optical field manipulation

Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient

Lei Han(韩磊), Shuxia Qi(齐淑霞), Sheng Liu(刘圣), Peng Li(李鹏), Huachao Cheng(程华超), Jianlin Zhao(赵建林)

MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China

收稿日期:2020-05-17 修回日期:2020-06-20 接受日期:2020-06-29 出版日期:2020-09-05 发布日期:2020-09-05
通讯作者: Sheng Liu, Jianlin Zhao E-mail:shengliu@nwpu.edu.cn;jlzhao@nwpu.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0303800), the National Natural Science Foundation of China (Grant Nos. 11634010, 61675168, 91850118, 11774289, and 11804277), the Fundamental Research Funds for the Central Universities, China (Grant No. 3102019JC008), and the Basic Research Plan of Natural Science in Shaanxi Province, China (Grant Nos. 2018JM1057 and 2019JM-583).

Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient

Lei Han(韩磊), Shuxia Qi(齐淑霞), Sheng Liu(刘圣), Peng Li(李鹏), Huachao Cheng(程华超), Jianlin Zhao(赵建林)

MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China

Received:2020-05-17 Revised:2020-06-20 Accepted:2020-06-29 Online:2020-09-05 Published:2020-09-05
Contact: Sheng Liu, Jianlin Zhao E-mail:shengliu@nwpu.edu.cn;jlzhao@nwpu.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0303800), the National Natural Science Foundation of China (Grant Nos. 11634010, 61675168, 91850118, 11774289, and 11804277), the Fundamental Research Funds for the Central Universities, China (Grant No. 3102019JC008), and the Basic Research Plan of Natural Science in Shaanxi Province, China (Grant Nos. 2018JM1057 and 2019JM-583).

摘要/Abstract

摘要： 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.

关键词: hybrid vector beam, polarization gradient, polarization mapping track, orbital angular momentum density

Abstract: 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.

Key words: hybrid vector beam, polarization gradient, polarization mapping track, orbital angular momentum density

中图分类号: (Polarization)

42.25.Ja

42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.50.Tx (Optical angular momentum and its quantum aspects) 42.40.Jv (Computer-generated holograms)

韩磊, 齐淑霞, 刘圣, 李鹏, 程华超, 赵建林. Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient[J]. 中国物理B, 2020, 29(9): 94203-094203.

Lei Han(韩磊), Shuxia Qi(齐淑霞), Sheng Liu(刘圣), Peng Li(李鹏), Huachao Cheng(程华超), Jianlin Zhao(赵建林). Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient[J]. Chin. Phys. B, 2020, 29(9): 94203-094203.

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Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient

Hybrid vector beams with non-uniform orbital angular momentum density induced by designed azimuthal polarization gradient

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