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Opt Lett. 2012 Jun 1;37(11):2085-7. doi: 10.1364/OL.37.002085.

Graphene mode-locked femtosecond laser at 2 μm wavelength.

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  • 1Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics, Shanghai Jiao Tong University, Shanghai, 200240, China.

Abstract

We experimentally demonstrated a passively mode-locked femtosecond laser by using a graphene-based saturable absorber mirror (graphene SAM) in the spectral region of 2 μm. The graphene SAM was fabricated by transferring chemical-vapor-deposited, high-quality, and large-area graphene on a highly reflective plane mirror. Stable mode-locked laser pulses as short as 729 fs were obtained with a repetition rate of 98.7 MHz and an average output power of 60.2 mW at 2018 nm.

PMID:
22660129
[PubMed]
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