【作者】 王进； 李宁； 韦玮； 彭波；

【Author】 Wang Jin 1,2 Li Ning 1,2 Wei Wei 1 Peng Bo,1 (1 State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China) (2 Graduate University of Chinese Academy of sciences,Beijing 100049,China)

【机构】 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室； 中国科学院研究生院；

【摘要】 本文采用湿化学法,以石墨粉作为原料,脱氧胆酸钠为表面活性剂,水为溶剂,成功地制备了石墨烯溶液和薄膜,并对其溶液和薄膜的可饱和吸收特性进行了研究。结果说明,利用湿化学法制备的石墨烯溶液和薄膜具有非线性可饱和吸收特性,其可饱和吸收特性无波长选择特性,能够在很宽的波长区域内实现激光锁模。其成本远远低廉于作为锁模器件的半导体可饱和吸收镜(SESAM),具有类可饱和吸收体无法比拟的优势,有望在光纤激光器中作为新一代锁模器件得到应用。更多还原

【Abstract】 Here we synthesize graphene from graphite by wet-chemistry techniques.A graphene-polyvinyl alcohol composite is fabricated.The research shows both of graphene solutions and the composite have saturable absorption ability.The atomic layer grapheme possesses wavelength-independent ultrafast saturable absorption,which can be realized mode-locking in a large-wide-range wavelength.The cost of the atomic layer grapheme is far lower than the semiconductor saturable absorbles mirror (SESAM) as a mode-locker.It also has the super-advantage which the artificial saturable absorber doesn’t have.As a result,the graphene has the potential application in the fiber lasers as a mode-locker.更多还原