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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Graphene oxide and reduced graphene oxide as saturable absorbers onto D-shaped fibers for sub 200-fs EDFL mode-locking

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Steinberg, David [1] ; Gerosa, Rodrigo M. [1] ; Pellicer, Fernanda N. [1] ; Zapata, Juan D. [1] ; Domingues, Sergio H. [1] ; Thoroh de Souza, Eunezio A. [1] ; Saito, Lucia A. M. [1]
Total Authors: 7
[1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Rua Consolacao 930, BR-01302907 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: OPTICAL MATERIALS EXPRESS; v. 8, n. 1, p. 144-156, JAN 1 2018.
Web of Science Citations: 14

We present high mode-locking performances from an erbium-doped fiber laser (EDFL) by using graphene oxide (GO) and reduced graphene oxide (r-GO) as saturable absorbers (SA) deposited onto the polished surface of a D-shaped optical fiber. The samples were prepared with different concentrations and its characterization was performed by using an optical microscope, a Raman spectrometer, nonlinear saturable absorption measurements, polarization setup, and laser mode-locking analysis. As a 1550-nm polarizer, the best GO (r-GO) samples exhibited higher polarization extinction ratio (PER) of 7.94 (7.65) dB, corresponding to 84 (83) %, both showing similar graphene TE absorption behavior. In a managed-intracavity dispersion laser, broadest bandwidths of 27.2 and 24.1 nm and the corresponding shortest pulse duration of 190 fs could be generated when incorporating the SA with high modulation depth (above 20%), being so far the best mode-locking results ever reported in the literature for GO and r-GO SA onto D-shaped optical fibers in EDFL. (c) 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (AU)

FAPESP's process: 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides
Grantee:Christiano José Santiago de Matos
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/25836-2 - Sources of ultrashort pulses and high repetition rates based on 2D materials
Grantee:Juan Diego Zapata Caro
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
Grantee:Antonio Helio de Castro Neto
Support type: Research Projects - SPEC Program