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Broadband Nonlinear Optical Response of Graphene Dispersions
Author(s) -
Wang Jun,
Hernandez Yenny,
Lotya Mustafa,
Coleman Jonathan N.,
Blau Werner J.
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200803616
Subject(s) - graphene , materials science , exfoliation joint , broadband , nonlinear system , scattering , phase (matter) , limiting , yield (engineering) , optoelectronics , nanotechnology , chemical physics , chemical engineering , optics , composite material , organic chemistry , physics , mechanical engineering , chemistry , engineering , quantum mechanics
A series of unoxidized and defect‐free graphene dispersions with large populations of single and multilayer graphenes is prepared by employing high‐yield exfoliation of graphene in the liquid phase. The graphene dispersions exhibit broadband optical limiting at 532 and 1064 nm. Nonlinear scattering, originated from the thermally induced solvent bubbles and microplasmas, is responsible for this nonlinear behavior.