Experimental verification of two-dimensional spatial harmonic analysis at oblique light incidence

Zhengtong Liu, Kuo-Ping Chen, Xingjie Ni, Vladimir P. Drachev, Vladimir M. Shalaev, Alexander V. Kildishev

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We use a nanofabricated gold grating to validate two-dimensional spatial harmonic analysis (2D SHA) method, also known as Fourier modal method or rigorous coupled-wave analysis under oblique incidence. The transmittance spectra of the metal grating for incident angles of 0°-30° are obtained in both experiments and simulations at the zero diffraction order. The simulations are performed with our custom software, a fully functional web-based 2D SHA tool, which has been staged at nanoHUB.org and is free to use. The simulation results are compared to experimentally measured values, and a good fit is achieved for all incident angles. Possible reasons for experiment-simulation mismatch in actual nano-plasmonic structures are also discussed.

Original languageEnglish
Pages (from-to)2465-2470
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Volume27
Issue number12
DOIs
StatePublished - 1 Jan 2010

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