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Engineering Antiviral Agents via Surface Plasmon Resonance

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Angular dependent strong coupling between localized waveguide resonance and surface plasmon resonance in

Changji Liu¹, Zehan Yao¹, Yuanyuan Huang¹

¹Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|December 18, 2018

Summary

This study provides direct evidence for surface plasmon resonance (SPR) and localized waveguide resonance (LWR) in metamaterials. Strong coupling between SPR and LWR enables angular control of light-metamaterial interactions for on-chip slow light devices.

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Area of Science:

Optics and Photonics
Materials Science
Metamaterials

Background:

Extraordinary optical transmission (EOT) in metamaterials is a key phenomenon for optical devices.
Understanding the underlying resonance mechanisms, such as surface plasmon resonance (SPR) and localized waveguide resonance (LWR), is crucial for controlling light-metamaterial interactions.

Purpose of the Study:

To provide direct evidence of both SPR and LWR contributions to EOT in complementary metamaterials.
To investigate the coupling between SPR and LWR and its impact on light transmission.
To explore the potential for angular modulation to control light-metamaterial interactions for on-chip applications.

Main Methods:

Experimental investigation of complementary metamaterials exhibiting extraordinary optical transmission.
Analysis of optical spectra to identify and confirm SPR and LWR phenomena.
Observation and characterization of strong coupling effects, including Rabi splitting and anti-crossing.

Main Results:

Direct evidence presented for the co-contribution of SPR and LWR to EOT.
Strong coupling between SPR and LWR observed, manifesting as Rabi splitting and anti-crossing.
Sharp phase shifts induced by resonance coupling enhance group velocity delay with incident angle, without altering geometric parameters.

Conclusions:

The study clarifies the roles of SPR and LWR in EOT.
Demonstrates a novel method for controlling light-metamaterial interactions through angular modulation.
Highlights the potential for developing on-chip slow light devices utilizing these phenomena.