Special Section on Nanostructured Thin Films: Evolving Perspectives

Optical coating on nano-optical antennas to enhance directional radiation

[+] Author Affiliations
Yi-Jun Jen, Meng-Jie Lin, Ci-Yao Jheng, Wei-Chih Liu

National Taipei University of Technology, Department of Electro-Optical Engineering, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan

J. Nanophoton. 9(1), 093595 (Feb 24, 2015). doi:10.1117/1.JNP.9.093595
History: Received October 25, 2014; Accepted January 19, 2015
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Abstract.  A traditional high-reflection optical coating was applied to enhance the directional radiation of nanoantennas. A highly reflective multilayer upon the top lateral side of a horizontally lying silver nanorod enhances the forward scattering when an optical wave is incident on the bare bottom side of the nanorod. Enhanced forward scattering can thus be observed from a glancing deposited silver nanorod array (NRA). An effective method for coupling the energy of incident light into a NRA involves arranging the NRA in a prism coupling. The highly efficient light coupling effect over a broadband and a wide range of angles results in extra-strong forward light scattering.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Yi-Jun Jen ; Meng-Jie Lin ; Ci-Yao Jheng and Wei-Chih Liu
"Optical coating on nano-optical antennas to enhance directional radiation", J. Nanophoton. 9(1), 093595 (Feb 24, 2015). ; http://dx.doi.org/10.1117/1.JNP.9.093595


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