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Type: Artigo de periódico
Title: Optical spin-to-orbital plasmonic angular momentum conversion in subwavelength apertures
Author: Brandao, PA
Cavalcanti, SB
Abstract: Within the framework of the Huygens-Fresnel approach, we evaluate the coherent superposition of surface plasmon (SP) modes excited by an incident circularly polarized light propagating through an array of subwavelength holes. Numerical results of the plasmonic distribution exhibit a rich structure that reveals the creation and annihilation of vortex arrays in the field phase. These phase singularities stem from total transfer of the spin angular momentum (AM) of the incident radiation to the orbital AM of the SP. (C) 2013 Optical Society of America
Country: EUA
Editor: Optical Soc Amer
Citation: Optics Letters. Optical Soc Amer, v. 38, n. 6, n. 920, n. 922, 2013.
Rights: aberto
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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