http://www.cnr.it/ontology/cnr/individuo/prodotto/ID941

Low-loss and highly polarized emission from planar polymer waveguides (Articolo in rivista)

Type

Label

Low-loss and highly polarized emission from planar polymer waveguides (Articolo in rivista) (literal)

Anno

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Alternative label

Camposeo, A; Mele, E; Persano, L; Pisignano, D; Cingolani, R (2006)
Low-loss and highly polarized emission from planar polymer waveguides
in Optics letters; Optical Society of America, Washington (Stati Uniti d'America)
(literal)

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Note

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Univ Lecce, Natl Nanotechnol Lab, CNR, INFM,Distretto Tecnol ISUFI, I-73100 Lecce, Italy (literal)

Titolo

Abstract

The waveguiding properties and amplified spontaneous emission (ASE) of a blend of light-emitting gain-conjugated polymers were investigated. ASE-induced line narrowing occurs for excitation fluences larger than 100 mu J cm(-2), with a maximum optical-gain coefficient of 8 cm(-1). Energy transfer between the host and guest polymers, significantly reducing the self-absorption, leads to a loss coefficient of the waveguide as low as 0.3 cm(-1), which is believed to be the lowest value reported for active organic gain slabs and a highly polarized emission, with a polarization contrast up to 0.65. These results indicate that gain-conjugated polymer blends are state-of-the-art organic materials for lasing devices. (literal)

Editore