▎ 摘　　要

Graphene/CdS (G/CdS) nanocomposite was first fabricated by a hydrothermal method. G/CdS nanocomposite was then dispersed in polymethyl methacrylate (PMMA) for preparation of organic glass by a casting method. The G/CdS/PMMA organic glass exhibits enhanced nonlinear optical (NLO) properties compared to G/PMMA and CdS/PMMA organic glass. Moreover, NLO properties of the G/CdS/PMMA organic glass can be controlled by adjusting the addition amount of G/CdS nanocomposite in PMMA. Our results demonstrate that the G/CdS/PMMA organic glass is very promising for optical devices, such as optical limiters and optical switch. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789367]