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Proceedings Paper

Coherence changes of partially coherent beams in transmission through subwavelength metallic gratings
Author(s): Hanna Lajunen; Toni Saastamoinen
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Paper Abstract

The transmission resonances occurring in the extraordinary light transmission through metallic films with subwavelength holes can be used to tailor the spectral transmission properties of periodic slit and hole arrays. In this work we study with rigorous numerical simulations the corresponding changes in the coherence properties of electromagnetic fields transmitted through periodic subwavelength metallic gratings with narrow linear slits. Our numerical results show that by choosing suitable parameters for the grating, the degree of coherence of the beam can be significantly increased. The studied approach offers new possibilities to alter the coherence properties of fields using nanophotonic components.

Paper Details

Date Published: 17 August 2014
PDF: 5 pages
Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91632U (17 August 2014); doi: 10.1117/12.2061741
Show Author Affiliations
Hanna Lajunen, Univ. of Eastern Finland (Finland)
Toni Saastamoinen, Univ. of Eastern Finland (Finland)


Published in SPIE Proceedings Vol. 9163:
Plasmonics: Metallic Nanostructures and Their Optical Properties XII
Allan D. Boardman, Editor(s)

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