Arbitrary superposition of plasmonic orbital angular momentum states with nanostructures.
Opt Lett
; 47(8): 2032-2035, 2022 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-35427329
ABSTRACT
A kind of plasmonic nanostructure is proposed that can generate the arbitrary superposition of orbital angular momentum (OAM) states in surface plasmons (SPs), which is achieved by combining the segmented spirals with nanoslit pairs. The structures can independently modulate both the phase and amplitude of SP waves, and thus enable the superposition of two OAM states with arbitrary topological charges (TCs) as well as free control of their relative amplitudes. Superposed states distributed over the entire Bloch sphere and hybrid superposed states with different TCs were constructed and experimentally demonstrated. This work will offer more opportunities for multifunctional plasmonic devices.
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Colección:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Año:
2022
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Article