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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Reflection-type wavelength-selective infrared emitter using surface plasmon polaritons.

Katsuya Masuno¹, Shinya Kumagai, Minoru Sasaki

¹Department of Advanced Science and Technology, Toyota Technological Institute, Tenpaku-ku, Nagoya, Japan. sd08504@toyota-ti.ac.jp

|February 2, 2011

Summary

This study introduces a novel wavelength selective infrared emitter. It utilizes surface plasmon polaritons on metallic gratings to efficiently control thermal emissions with high power efficiency.

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Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Controlling thermal emission is crucial for various optical and energy applications.
Existing infrared emitters often lack wavelength selectivity and efficiency.
Surface plasmon polaritons (SPPs) offer a route to manipulate light-matter interactions at the nanoscale.

Purpose of the Study:

To propose and demonstrate a reflection-type wavelength selective infrared emitter.
To leverage surface plasmon polaritons for precise control over thermal emission spectra.
To enhance the power efficiency of infrared emitters.

Main Methods:

Fabrication of a metallic grating structure to support surface plasmon polaritons.
Investigation of thermal emission properties using optical characterization techniques.

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Analysis of the coupling between incident infrared radiation and SPPs.

Utilizing grating and reflectors for IR power confinement.

Main Results:

Observation of a distinct emission peak at a wavelength matching the grating's period.
Demonstration of wavelength selectivity in thermal emission.
Efficient confinement of infrared power for wavelengths not coupled with SPPs.
Achieved higher emitter temperature with lower input power, indicating increased efficiency.

Conclusions:

The proposed metallic grating structure effectively acts as a wavelength selective infrared emitter.
Surface plasmon polaritons are successfully utilized to control and enhance thermal emission.
The design offers a promising pathway towards highly efficient and spectrally tailored infrared sources.