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

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Lambertian thermal emitter based on plasmonic enhanced absorption.

Chih-Ming Wang, Din Ping Tsai

|August 10, 2016

Summary

This summary is machine-generated.

Researchers demonstrated a narrow band thermal emitter using a one-dimensional metasurface, enhancing emissivity by 5.8-folds. This development is beneficial for infrared (IR) sensing applications.

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Area of Science:

Metamaterials and Nanophotonics
Infrared Spectroscopy
Thermal Emitters

Background:

Metasurfaces offer unique optical properties for controlling thermal emission.
Silicon dioxide (SiO2) has specific phonon absorption characteristics.
Efficient infrared (IR) thermal emitters are crucial for sensing technologies.

Purpose of the Study:

To demonstrate a narrow band thermal emitter operating at 10 μm.
To investigate the role of magnetic resonance in enhancing thermal emission.
To optimize metasurface structures for improved emissivity and IR sensing capabilities.

Main Methods:

Fabrication of a one-dimensional metasurface.
Utilizing a magnetic resonance mode to enhance phonon absorption in SiO2.
Characterization of the thermal emission spectrum and angular distribution.

Main Results:

Achieved narrow band thermal emission centered at 10 μm.
Observed enhanced phonon absorption in SiO2 due to the metasurface's magnetic resonance.
Demonstrated a Lambertian emission distribution.
Attained a 5.8-fold enhancement in emissivity through cavity thickness optimization.

Conclusions:

The proposed one-dimensional metasurface effectively generates narrow band thermal emission.
Magnetic resonance plays a key role in enhancing phonon absorption and emissivity.
Optimized metasurface thermal emitters show significant potential for IR sensing applications.