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Related Experiment Video

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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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Realizing Minimally Perturbed, Nonlocal Chiral Metasurfaces for Direct Stokes Parameter Detection.

Yu Geun Ki¹, Byeong Je Jeon¹, Il Hoon Song¹

¹School of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea.

|February 19, 2024

Summary

This study reveals how nonlocal and localized resonances interact to create effective chiral metasurfaces. These metasurfaces simplify Stokes parameter detection for circularly polarized light, advancing polarimetric sensing.

Keywords:

Bound states in the continuum Chiral metasurface Mie resonance Nonlocal resonance Stokes parameters

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Area of Science:

Optics and Photonics
Metamaterials
Nanophotonics

Background:

Nonlocal resonance-based chiral metasurfaces offer strong light-chiral interactions but face fabrication challenges for optical frequencies.
Existing methods for polarimetric detection using metasurfaces often require complex numerical processing of transmitted light.
The demanding fabrication of 3D-multilayered or nanoscaled chiral geometries limits practical applications.

Purpose of the Study:

To investigate the working principles of effective nonlocal chiral metasurfaces.
To reveal the crucial role of the interplay between high-Q nonlocal resonance and low-Q localized Mie resonance.
To demonstrate a simplified method for direct Stokes parameter detection using metasurfaces.

Main Methods:

Studied the fundamental principles governing the interaction between nonlocal and localized resonances in chiral metasurfaces.
Designed and fabricated a simple nonlocal chiral metasurface by minimally altering nanostructure geometry and filling ratio.
Experimental characterization focused on direct detection of Stokes parameters without complex numerical analysis.

Main Results:

Demonstrated that the interaction between high-Q nonlocal resonance and low-Q localized Mie resonance is key to effective nonlocal chiral metasurfaces.
Successfully realized a metasurface capable of directly detecting Stokes parameters.
Achieved consistent nanolithography for all samples at a targeted wavelength with relatively high-Q spectra.

Conclusions:

This work presents a novel design rule for creating effective polarimetric metasurfaces.
The developed metasurface offers a simplified approach to polarimetric detection by directly measuring Stokes parameters.
Potential applications include advanced polarimetric sensing and optical detection systems.