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Optical Vector Vortex Generation by Spherulites with Cylindrical Anisotropy.

Yuanfeng Liu¹, Le Zhou¹, Yongzheng Wen¹

¹State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.

|March 1, 2022

Summary

Researchers generated cylindrical vector optical vortex beams using natural spherulites. This method transforms spin angular momentum for structured light applications in the visible spectrum.

Keywords:

Structured light cylindrical symmetry polarization conversion spherulites vortex generation

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Area of Science:

Optics and Photonics
Materials Science
Condensed Matter Physics

Background:

Crystalline materials with circular symmetry are uncommon but valuable for optical applications requiring structured light.
Structured lights often exhibit cylindrical symmetry, necessitating specialized optical components for their generation.

Purpose of the Study:

To develop a novel method for generating cylindrical vector optical vortex beams.
To leverage naturally occurring circular anisotropy in spherulites for optical beam generation.

Main Methods:

Utilized spherulites, formed by molecular self-assembly, which possess inherent circular anisotropy.
Transformed spin angular momentum of light within the spherulite structure.
Demonstrated beam generation across a wide visible light spectrum.

Main Results:

Successfully generated cylindrical vector optical vortex beams.
The generated beams exhibited characteristics suitable for structured light applications.
The process was effective over a broad visible wavelength range.

Conclusions:

The proposed strategy offers a promising route for utilizing spherulites in structured light generation.
This method enables efficient modulation of light's polarization and angular momentum.
Opens new avenues for optical applications employing structured light and advanced optical materials.