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Journal of Nanomaterials
Volume 2014, Article ID 921896, 5 pages
Research Article

Saturable Absorption and Modulation Characteristics of Laser with Graphene Oxide Spin Coated on ITO Substrate

1School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
2School of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China

Received 24 January 2014; Revised 27 February 2014; Accepted 28 February 2014; Published 7 April 2014

Academic Editor: Xiang Wu

Copyright © 2014 Xin Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The graphene oxide (GO) thin film has been obtained by mixture of GO spin coated on substrate of indium tin oxide (ITO). The experiment has shown that continuous-wave laser is modulated when the graphene oxide saturable absorber (GO-SA) is employed in the 1064 nm laser cavity. The shortest pulse width is 108 ns at the pump power of 5.04 W. Other output laser characteristics, such as the threshold pump power, the repetition rate, and the peak power, have also been measured. The results have demonstrated that graphene oxide is an available saturable absorber for 1064 nm passive Q-switching laser.