Artículos de revistas
Optical spin-to-orbital plasmonic angular momentum conversion in subwavelength apertures
Registro en:
Optics Letters. Optical Soc Amer, v. 38, n. 6, n. 920, n. 922, 2013.
0146-9592
WOS:000316540800038
Autor
Brandao, PA
Cavalcanti, SB
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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 38 6 920 922 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CNPq [302641/2011-4]