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Scanning SQUID Study of Vortex Manipulation by Local Contact

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Published on: February 1, 2017

High-Efficiency Spin-Related Vortex Metalenses.

Wei Wang¹, Ruikang Zhao¹, Shilong Chang¹

¹Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China.

Nanomaterials (Basel, Switzerland)

|July 2, 2021

Summary

This summary is machine-generated.

This study introduces novel silicon nanobrick metalenses capable of generating vortex beams and manipulating spin-selective light. These metalenses enable efficient focusing and spin-to-orbital angular momentum conversion for integrated optical devices.

Keywords:

metasurfaces topological charge vortex beam vortex metalenses

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Area of Science:

Optics and Photonics
Materials Science

Background:

Vortex beams and spin-controlled light are crucial for advanced optical applications.
Metalenses offer miniaturization and novel functionalities in optical systems.

Purpose of the Study:

To design and numerically investigate two types of silicon nanobrick metalenses for mid-infrared applications.
To achieve simultaneous control over topological charge and light spin.
To explore spin-to-orbital angular momentum conversion.

Main Methods:

Numerical investigation of silicon nanobrick structures.
Design of a spin-selected vortex metalens.
Design of a spin-independent vortex metalens.

Main Results:

Demonstrated a spin-selected metalens producing vortex beams with varying topological charges and distinct spin lights.
Developed a spin-independent metalens focusing vortex beams with identical topological charges for different spins.
Achieved high-efficiency focusing for different spin lights with both metalenses.
Detailed analysis of spin-to-orbital angular momentum conversion.

Conclusions:

The designed metalenses offer high-efficiency focusing and spin manipulation capabilities.
This work paves the way for advanced spin-related integrated photonic devices.
Significant contributions to the fields of vortex optics and spin optics.