Materials, Photonic Devices, and Sensors

Multiple excitations of a surface-plasmon-polariton wave guided by a columnar thin film deposited on a metal grating

[+] Author Affiliations
Francesco Chiadini

University of Salerno, Department of Industrial Engineering, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy

Vincenzo Fiumara

University of Basilicata, School of Engineering, Viale dell’Ateneo Lucano 10, 85100 Potenza, Italy

Antonio Scaglione

University of Salerno, Department of Industrial Engineering, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy

Akhlesh Lakhtakia

Pennsylvania State University, Department of Engineering Science and Mechanics, Nanoengineered Metamaterials Group, University Park, Pennsylvania 16802-6812, United States

Opt. Eng. 53(12), 127105 (Dec 18, 2014). doi:10.1117/1.OE.53.12.127105
History: Received August 24, 2014; Accepted November 21, 2014
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Abstract.  Surface-plasmon-polariton (SPP) wave excitation in a composite structure obtained by depositing a columnar thin film (CTF) on a metal (silver) substrate decorated periodically by an array of rectangular grooves was analyzed using the rigorous coupled-wave approach. The SPP wave is excited as a Floquet harmonic of different orders by light incident from different directions, the incidence plane being the same as the grating plane. But, in some instances, the SPP wave appears to be excited as a doublet, i.e., a Floquet harmonic of the same order at two closely spaced angles of incidence, the excitation being less efficient for one angle of incidence than for the other. The characteristics of the SPP wave are affected by the vapor incidence angle chosen to deposit the CTF.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Francesco Chiadini ; Vincenzo Fiumara ; Antonio Scaglione and Akhlesh Lakhtakia
"Multiple excitations of a surface-plasmon-polariton wave guided by a columnar thin film deposited on a metal grating", Opt. Eng. 53(12), 127105 (Dec 18, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.127105


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