Graphene-Polymer Nanofiber Membrane for Ultrafast Photonics
Graphene-Polymer Nanofiber Membrane for Ultrafast Photonics
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DOI：
10.1002/adfm.200901658
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发表时间：
2010-03-09
影响因子：
19
通讯作者：
Loh, Kian Ping
中科院分区：
文献类型：
--
作者：
Bao, Qiaoliang;Zhang, Han;Loh, Kian Ping
采用静电纺丝法制备了由石墨烯-聚合物纳米复合材料纳米纤维网络构成的独立膜，并将其作为光学元件应用于光纤激光器。石墨烯与共轭有机分子的功能化为改善其机械和热性能以及调整其光学性能提供了一个契机。少量负载（0.07 wt%）的功能化石墨烯可使聚醋酸乙烯酯（PVAc）的总光吸收提高10倍。与单壁碳纳米管相比，电纺石墨烯-聚合物纳米复合材料在激光脉冲整形中具有宽带可饱和吸光度，并且具有更大的调制深度和更小的不饱和损耗。结果表明，电纺石墨烯纳米复合材料是一种实用、高效的用于光纤激光器中产生超短脉冲的光子材料。
A freestanding membrane composed of a nanofiber network of a graphene-polymer nanocomposite is fabricated by electrospinning and applied as an optical element in fiber lasers. The functionalization of graphene with conjugated organic molecules provides a handle for improving mechanical and thermal properties as well as tuning the optical properties. A small loading (0.07 wt%) of functionalized graphene enhances the total optical absorption of poly(vinyl acetate) (PVAc) by 10 times. The electrospun graphene-polymer nanocomposites exhibit wideband saturable absorbance for laser pulse shaping, and attain a larger modulation depth and smaller nonsaturable loss than single-walled carbon nanotubes. The results show that electrospun graphene nanocomposites are promising candidtates as practical and efficient photonic materials for the generation of ultrashort pulses in fiber lasers.