Optical fibers as beam shapers: from Gaussian beams to optical vortices

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Rodrigues Ribeiro, RSR (Autor) Outra; Dahal, P (Autor) Outra; Guerreiro, A (Autor) FCUP; Jorge, PAS (Autor) FCUP; Viegas, J (Autor) Outra

Revista

Título: Optics Letters

Vol. 41

Páginas: 2137-2140

ISSN: 0146-9592

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 33 Citações

Scopus - 34 Citações

Outras Informações

ID Authenticus: P-00K-GAV

DOI: 10.1364/ol.41.002137

Abstract (EN): This Letter reports a new method for the generation of optical vortices using a micropatterned optical fiber tip. Here, a spiral phase plate (2 pi phase shift) is micromachined on the tip of an optical fiber using a focused ion beam. This is a high resolution method that allows milling the fibers with nanoscale resolution. The plate acts as a beam tailoring system, transforming the fundamental guided mode, specifically a Gaussian mode, into the Laguerre-Gaussian mode (LG(01)), which carries orbital angular momentum. The experimental results are supported by computational simulations based on the finite-difference time-domain method. (C) 2016 Optical Society of America

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4