Random laser emission from a Rhodamine B-doped GPTS/TEOS-derived organic/silica monolithic xerogel

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Abegao, Luis M. G. ; Manoel, D. S. ; Otuka, A. J. G. ; Ferreira, P. H. D. ; Vollet, D. R. ; Donatti, D. A. ; De Boni, L. ; Mendonca, C. R. ; De Vicente, F. S. ; Rodrigues, J. J., Jr. ; Alencar, M. A. R. C.

• Tipo de documento: Artigo Científico
• Fonte: LASER PHYSICS LETTERS; v. 14, n. 6, p. 6-pg., 2017-06-01.

Resumo

A Rhodamine B-doped 3-glycidoxypropyltrimethoxysilane (GPTS)/tetraethyl orthosilicate (TEOS)-derived organic/silica monolithic xerogel with excellent optical properties was prepared and its potential as a random laser host investigated. This hybrid material has a non-porous organic/inorganic morphology with silica-rich nanoparticles of less than 10 nm in diameter homogeneously dispersed within the matrix. Random laser emission with incoherent feedback, centered at 618 nm, was observed from Rhodamine B incorporated into the monolithic xerogel when excited by a 532 nm pulsed laser. This hybrid system is shown to be very promising for the development of a new class of random laser-based integrated devices, with applications ranging from optical bio-imaging to sensing. (AU)

• Processo FAPESP: 11/12399-0 - Aplicações de pulsos de femtossegundos em óptica não linear: espectroscopia, formatação de pulsos e microfabricação
• Beneficiário: Cleber Renato Mendonça
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 11/23587-1 - Estruturas poliméricas com nanotubos de carbono: processamento a laser, caracterização e aplicações
• Beneficiário: Adriano José Galvani Otuka
• Modalidade de apoio: Bolsas no Brasil - Doutorado