Journal
ACS NANO
Volume 4, Issue 2, Pages 803-810Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901703e
Keywords
graphene; laser; ultrafast optics; composites
Categories
Funding
- EPSRC [EP/G030480/1, EP/G042357/1]
- European Research Council
- Royal Society Brian Mercer Award for Innovation
- Isaac Newton Trust
- Cambridge Integrated Knowledge Centre in Advanced Manufacturing Technology for Photonics and Electronics
- King's College, Cambridge
- EPSRC [EP/G042357/1, EP/G030480/1, EP/H00274X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H00274X/1, EP/G042357/1, EP/G030480/1] Funding Source: researchfish
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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 similar to 460 fs pulse duration, paving the way to graphene-based photonics,
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