Creating multiple ultra-long longitudinal magnetization textures by strongly focusing azimuthally polarized circular Airy vortex beams

Author:

Nie Zhongquan1,Ning Zibo,Liu Xiaofei2,Zhang Yu,Wang Hengjing,Cao Ensi1,Yan Weichao3

Affiliation:

1. Weifang University

2. Taiyuan Institute of Technology

3. Nanchang University

Abstract

We come up with a simple feasible scheme for the creation of multiple ultra-long longitudinal magnetization textures. This is realized by directly strongly focusing azimuthally polarized circular Airy vortex beams onto an isotropic magneto-optical medium based on the vectorial diffraction theory and the inverse Faraday effect. It is found that, by jointly tuning the intrinsic parameters (i. e. the radius of main ring, the scaling factor, and the exponential decay factor) of the incoming Airy beams and the topological charges of the optical vortices, we are able to garner not only super-resolved scalable magnetization needles as usual, but also steerable magnetization oscillations and nested magnetization tubes with opposite polarities for the first time. These exotic magnetic behaviors depend on the extended interplay between the polarization singularity of multi-ring structured vectorial light fields and the additional vortex phase. The findings demonstrated are of great interest in opto-magnetism and emerging classical or quantum opto-magnetic applications.

Funder

National Natural Science Foundation of China

Key Research and Development (R&D) Projects of Shanxi Province

Fundamental Research Program of Shanxi Province

Research Project Supported by Shanxi Scholarship Council of China

Science and Technology Foundation of Guizhou Province

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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