Elementary-field modeling of surface-plasmon excitation with partially coherent light

Autor:	Jari Turunen, Heikki Hyvärinen, Pasi Vahimaa
Rok vydání:	2010
Předmět:	Quantum optics Electromagnetic field Physics Physics and Astronomy (miscellaneous) business.industry Modal analysis Surface plasmon General Engineering Physics::Optics General Physics and Astronomy symbols.namesake Fourier transform Optics symbols business Plasmon Excitation Coherence (physics)
Zdroj:	Applied Physics B. 101:273-282
ISSN:	1432-0649 0946-2171
DOI:	10.1007/s00340-010-4012-z
Popis:	We present a mathematical model and its numerical implementation for the analysis of the interaction of spatially partially coherent electromagnetic fields with micro- and nanostructured objects. The model is based on the decomposition of the incident field into a set of fully coherent but mutually uncorrelated elementary field modes, and the use of the Fourier Modal Method (FMM) with the S-matrix propagation algorithm. We apply the model to studies of the excitation of surface plasmons in thin metallic slabs, nanowires, and resonant structures. We demonstrate, e.g., that the plasmon excitation efficiency is not essentially affected by the degree of spatial coherence. However, certain plasmon interference effects can be efficiently smoothed out by using illumination with reduced coherence.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d51d6ce7d88ac04b982b048726f2489 https://doi.org/10.1007/s00340-010-4012-z Zobrazit plný text záznamu Plný text ve formátu PDF