Research Papers

Near-perfect absorption with a metallic grating and dielectric substrate

[+] Author Affiliations
Yan-Lin Liao

Anhui University, Ministry of Education, Key Lab of Opto-electronic Information Acquisition and Manipulation, Hefei 230039, China

Yan Zhao

Anhui Medical University, Department of Physics, Hefei 230032, China

J. Nanophoton. 9(1), 093087 (Feb 26, 2015). doi:10.1117/1.JNP.9.093087
History: Received November 26, 2014; Accepted February 9, 2015
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Abstract.  We realize near-perfect absorption with a metallic grating and dielectric substrate. The simulation results show that such near-perfect absorption results from the cavity mode resonance and surface plasmonic polaritions excitation. The absorption peaks can be tuned by changing the geometric parameters or refractive indices of the surrounding materials. When the refractive index of the superstratum is smaller than that of the substrate, one can attain near-perfect absorption with a single-layer metallic grating. The simulation results also show that the absorption peak can be tuned by increasing the incidence angle.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Yan-Lin Liao and Yan Zhao
"Near-perfect absorption with a metallic grating and dielectric substrate", J. Nanophoton. 9(1), 093087 (Feb 26, 2015). ; http://dx.doi.org/10.1117/1.JNP.9.093087


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