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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

One-step deposition and in-situ reduction of graphene oxide in photonic crystal fiber for all-fiber laser mode locking

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Autor(es):
Gerosa, Rodrigo M. [1] ; Suarez, Felipe G. [1] ; Vianna, Pilar G. [1] ; Domingues, Sergio H. [1] ; de Matos, Christiano J. S. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Rua Consolacao 896, BR-01302907 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: OPTICS AND LASER TECHNOLOGY; v. 121, JAN 2019.
Citações Web of Science: 0
Resumo

Films of graphene oxide (GO) were produced on the inner walls of the glass microcapillaries of photonic crystal fibers via insertion of a GO water suspension followed by quick drying with a hot finger (no previous surface functionalization required). Individual capillaries from an array could also be selectively GO coated. Raman hyperspectral images revealed the films to be continuous along tens of centimeters. Furthermore, the films were thermally reduced and, through an annealing process, the concentration of defects in the resulting reduced graphene oxide (rGO) could be decreased. In particular, the two larger microcapillaries of a polarization maintaining photonic crystal fibers were covered with an rGO film, leading to the demonstration of fibers with polarization dependent loss, which were used as mode lockers for pulsed fiber lasers. Pulses as short as 350 fs, with a spectral bandwidth of 8.1 nm, were generated, being shorter than those previously obtained with GO- or rGO-coated non-polarization maintaining photonic crystal fibers. (AU)

Processo FAPESP: 15/11779-4 - Efeitos plasmônicos e não-lineares em grafeno acoplado a guias de onda ópticos
Beneficiário:Christiano José Santiago de Matos
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
Beneficiário:Antonio Helio de Castro Neto
Linha de fomento: Auxílio à Pesquisa - Programa SPEC