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Low-energy Cathodoluminescence for OxyNitride Phosphors

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White Vortex Light Generations With 7OCB Spherulite.

Yuanfeng Liu¹, Le Zhou², Xiaoxuan Peng¹

¹School of Materials Science and Engineering, State Key Laboratory of New Ceramic Materials Tsinghua University Beijing China.

Nanophotonics (Berlin, Germany)

|March 9, 2026

Summary

This summary is machine-generated.

Researchers used 7OCB molecule spherulites to create structured light. These crystalline aggregates enable the generation of optical vortex beams across a wide spectrum, useful for optical applications.

Keywords:

7OCB optical vortex spherulite white light

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Area of Science:

Materials Science
Optics and Photonics

Background:

Spherulites are microscale crystalline aggregates with radial symmetry.
Their birefringent textures make them valuable for optical applications like structured light.
7OCB molecules form spherulites with unique optical properties.

Purpose of the Study:

To investigate the optical properties of 7OCB molecule spherulites.
To utilize these spherulites for structured light generation.
To explore spin-to-orbital angular momentum conversion.

Main Methods:

Formation of spherulites from 7OCB molecules.
Analysis of anisotropic transmittance due to scattering.
Demonstration of spin-to-orbital angular momentum conversion.

Main Results:

Achieved polychromatic generation of cylindrical vector optical vortex beams (visible to near-infrared).
Generated a noncoherent white light optical vortex beam.
Observed strong anisotropic transmittance based on radial and azimuthal orientation.

Conclusions:

7OCB spherulites effectively generate structured light.
This method enables broad-spectrum optical vortex beam generation.
Spherulites offer potential for polarization and angular momentum modulation.