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Angle and polarization independent narrow-band thermal emitter made of metallic disk on
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Basic geometry of the investigated structure, MD. (b) SEM image with a 35° angle view for a MD array.

Image of FIG. 2.
FIG. 2.

Dispersion relations of MD array with , , , and for (a) TM- and (b) TE-mode. distribution within one pitch for a MD structure at 0.33 eV for (c) in XY-plane at , (d) in XZ-plane at .

Image of FIG. 3.
FIG. 3.

(a) Emission spectra of the proposed MD array structure for p-polarized light (line with circles), unpolarized light (line with squares), for T-shaped structure (line with triangles) and the ideal blackbody radiation at (dashed line). (b) Absorption spectra of the MD array structure with different diameters for . The inset shows Resonance wavelength position vs layer thickness, .

Image of FIG. 4.
FIG. 4.

Absorbance spectra from the MD array for (a) pattern A pattern B. The simulated spectra at normal incidence are superposed for comparison. (b) The measured dispersion relation of reflectance spectra of sample C. (c) Simulated and measured emission spectrum of the IR emitter at and , respectively. (d) The measured emission spectrum for unpolarized, s-polarized and p-polarized for . The thermal radiation was collected by a 45° off-axis concave mirror with a NA of 0.1 and then reflected into the FTIR system.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Angle and polarization independent narrow-band thermal emitter made of metallic disk on SiO2