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Multiscale beam evolution and shaping in corrugated plasmonic systems.

S Thongrattanasiri¹, D C Adams, D Wasserman

¹Department of Physics, Oregon State University, 301 Weniger Hall, Corvallis, Oregon 97331, USA.

|June 7, 2011

Summary

This summary is machine-generated.

We studied wavepacket dynamics in plasmonic beaming devices, revealing a multiscale phenomenon governing beam evolution from near-field to far-field. Our findings enable precise control over light propagation in these nanophotonic structures.

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Area of Science:

Photonics and Nanotechnology
Plasmonics
Wave Mechanics

Background:

Plasmonic beaming devices offer unique light manipulation capabilities.
Understanding wavepacket dynamics is crucial for device performance.
Beam evolution in these structures is complex and not fully characterized.

Purpose of the Study:

To theoretically and experimentally analyze wavepacket dynamics in plasmonic beaming devices.
To develop a quantitative description of light evolution within these structures.
To engineer plasmonic geometries for controlled mid-field beam shaping.

Main Methods:

Theoretical analysis of wavepacket dynamics.
Experimental verification of theoretical predictions.
Design and fabrication of novel plasmonic geometries.

Main Results:

Beam evolution is a multiscale phenomenon, spanning near-field to far-field.
A quantitative model for light evolution was developed and experimentally validated.
Engineered plasmonic structures demonstrated controlled mid-field beam shaping.

Conclusions:

Plasmonic beaming device operation involves complex, multiscale wavepacket dynamics.
The developed theoretical framework accurately describes and predicts beam evolution.
Tailored plasmonic geometries can effectively shape light beams in the mid-field.