Method for controlling photonic spin hall effect based on polar medium core-shell structure
By constructing a nanoparticle model of a silicon dielectric core and a silicon carbide polar dielectric shell, and combining Mie theory to control the core-shell ratio and morphology, the problem of the inability to manifest photon spin Hall shift in the mid-infrared band was solved, and the shift and scattering intensity were enhanced, supporting large-scale applications.
CN122266568APending Publication Date: 2026-06-23SUZHOU CITY UNIV +1
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Patent Information
- Application Number
- CN202610170148.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
Existing technologies struggle to visualize photonic spin Hall shifts in the mid-infrared band, resulting in low scattering intensity, poor tunability, and limited large-scale applications.
Method used
A spherical core-shell structure with a silicon dielectric core and a silicon carbide polar dielectric shell was adopted. By combining Mie theory and adjusting the core-shell ratio and morphology, the amplitude of photon spin Hall shift and scattering intensity were enhanced, and a nanoparticle model was constructed.
Benefits of technology
It significantly enhances photonic spin Hall shift in the mid-infrared region, improving detectability and stability, reducing costs, and facilitating large-scale applications.
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Figure CN122266568A_ABST
Abstract
The application provides a photonic spin Hall effect regulation method based on a polar medium core-shell structure, comprising the following steps: constructing a nanoparticle model based on core parameters of a spherical core-shell structure of a silicon dielectric core-silicon carbide polar medium shell; constructing an optical scattering transfer function based on the core parameters and the Mie theory; calculating photonic spin Hall displacement amplitudes of a short-wave side region and a long-wave side region of a full anti-band of a silicon carbide material in a mid-infrared region based on the optical scattering transfer function; regulating the photonic spin Hall displacement amplitudes and the center positions of the short-wave side region and the long-wave side region by adjusting a core-shell ratio; and converting the spherical core-shell structure into an ellipsoidal core-shell structure by adjusting the morphology of the core-shell structure, so as to enhance the photonic spin Hall displacement amplitude and the scattering intensity of the short-wave side region. The application can solve the problems that the photonic spin Hall displacement is difficult to appear in the mid-infrared waveband, the scattering intensity is low, the adjustability is poor, and the application is difficult to be large-scale.
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