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Standing Waves in a Cavity

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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Updated: May 18, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Surface plasmonic lattice solitons.

Yao Kou¹, Fangwei Ye, Xianfeng Chen

¹Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai, China.

|October 9, 2012

Summary

This summary is machine-generated.

We discovered surface plasmonic lattice solitons (surface PLSs) at the edge of nanostructures. Truncation of these structures enhances soliton localization and enables subwavelength switching applications.

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Area of Science:

Photonics and Nanophotonics
Condensed Matter Physics

Background:

Surface plasmon polaritons (SPPs) are electromagnetic waves confined to the interface between a conductor and a dielectric.
Periodic nanostructures offer unique optical properties due to their ability to support surface plasmonic lattice waves.

Purpose of the Study:

To investigate the existence and properties of surface plasmonic lattice solitons (surface PLSs) at the boundary of a semi-infinite metallic-dielectric periodic nanostructure.
To explore the influence of structural truncation on surface PLS characteristics.
To demonstrate the potential of surface PLSs in all-optical subwavelength switching.

Main Methods:

Theoretical analysis of electromagnetic wave propagation in metallic-dielectric periodic nanostructures.
Numerical simulations to observe the formation, propagation, and excitation of surface PLSs.
Investigation of modal localization and threshold power requirements.

Main Results:

Existence of surface plasmonic lattice solitons (surface PLSs) confirmed at the boundary of truncated periodic nanostructures.
Truncation of the periodic structure was found to impose a threshold power for surface PLS formation.
Significant enhancement of modal localization was observed due to structural truncation.
Demonstration of surface PLS propagation and excitation.
Potential application in all-optical subwavelength switching validated.

Conclusions:

Surface plasmonic lattice solitons (surface PLSs) can be formed and sustained at the boundary of semi-infinite metallic-dielectric periodic nanostructures.
Structural truncation is a critical factor in controlling surface PLS properties, including localization and threshold power.
Surface PLSs hold promise for future optical devices, particularly in all-optical subwavelength switching applications.