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arXiv · 0909.0457

Graphene Mode-Locked Ultrafast Laser

Z. Sun·T. Hasan·F. Torrisi·D. Popa·G. Privitera·F. Wang·F. Bonaccorso·D. M. Basko·A. C. Ferrari
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Abstract

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 fibre laser working at 1559nm, with a 5.24nm spectral bandwidth and ~460fs pulse duration, paving the way to graphene-based photonics.

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Z. Sun, T. Hasan, F. Torrisi, D. Popa, G. Privitera, F. Wang, F. Bonaccorso, D. M. Basko, A. C. Ferrari. 2009-09-02. Graphene Mode-Locked Ultrafast Laser. https://doi.org/10.1021/nn901703e

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