Graphene mode-locked ultrafast laser.

By Zhipei Sun, Tawfique Hasan, F. Torrisi, Daniel Popa, G. Privitera, Fengqiu Wang, Francesco Bonaccorso, D. Basko, Andrea C. Ferrari. ACS Nano, 2009

1,868 citations recorded by the source corpus.

Graphene is at the center of a significant research effort. Near-ballistic transport at room temperature and high mobility make it a potential material for nanoelectronics. Its electronic and mechanical properties are also ideal for micro- and nanomechanical systems, thin-film transistors, and transparent and conductive composites and electrodes. Here we exploit the optoelectronic properties of graphene to realize an ultrafast laser. A graphene-polymer composite is fabricated using wet-chemistry techniques. Pauli blocking following intense illumination results in saturable absorption, independent of wavelength. This is used to passively mode-lock an erbium-doped fiber laser working at 1559 nm, with a 5.24 nm spectral bandwidth and approximately 460 fs pulse duration, paving the way to graphene-based photonics.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/8c18eebffb32717db574b388b277ff7a09b5571d

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Broadband graphene polarizer (2011, background): “The facile saturation of its absorption due to Pauli blocking enables graphene to be used as a saturable absorber in broadband, ultrafast mode-locked lasers for use in telecommunication”
Monolayer graphene as a saturable absorber in a mode-locked laser (2010, background): “Following, another two groups also confirmed the mode‐locking of lasers using chemically processed graphene film [12] and graphene‐polymer composites [13] as saturable absorbers.”
A Tutorial on Nonlinear Photonic Applications of Carbon Nanotube and Graphene (2012, background): “Since then, several groups including us started to make graphene photonic devices using graphene-polymer composites [18], [84], mechanically exfoliated graphene on the fiber ferrule [85], optically deposited graphene onto the fiber ferrule [86]–[88], and evanescent-field coupled device using a D-sha”