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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Deep subwavelength waveguiding and focusing based on designer surface plasmons.
Wangshi Zhao1, Omar M Eldaiki, Ruoxi Yang
1Microsystems Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, New York 14623, USA.
Optics Express
|October 14, 2010
Summary
Researchers demonstrated focusing and guiding electromagnetic (EM) waves using a designer surface plasmonic waveguide. This metal grating structure supports deep subwavelength surface modes, enabling wave confinement and focusing for advanced applications.
Area of Science:
- * Physics, specifically condensed matter physics and optics.
- * Nanophotonics and plasmonics.
Background:
- * Controlling electromagnetic (EM) wave propagation at the nanoscale is crucial for developing advanced optical devices.
- * Surface plasmon polaritons (SPPs) offer a route to confine light beyond the diffraction limit, but achieving deep subwavelength confinement remains challenging.
Purpose of the Study:
- * To experimentally demonstrate the focusing and guiding of EM waves using a designer surface plasmonic waveguide.
- * To investigate the capability of a metal grating structure to support and control deep subwavelength surface modes.
Main Methods:
- * Fabrication and characterization of a metal grating designed as a surface plasmonic waveguide.
- * Experimental demonstration of waveguiding and focusing of EM waves.
- * Tapering the waveguide width to achieve deep subwavelength mode squeezing.
Main Results:
- * Successful demonstration of focusing and guiding EM waves in the designer surface plasmonic waveguide.
- * Confirmation that the metal grating supports deep subwavelength surface modes.
- * Observation of mode squeezing into the deep subwavelength regime by tapering the waveguide width.
Conclusions:
- * A metal grating can be engineered as an effective surface plasmonic waveguide for deep subwavelength waveguiding.
- * The demonstrated deep subwavelength waveguiding and focusing capabilities offer new insights for nanoscale optical manipulation.
- * This work paves the way for novel nanophotonic devices utilizing extreme light confinement.
