Broadband Saturable Absorption of Graphene Oxide Thin Film and Its Application in Pulsed Fiber Lasers
Broadband Saturable Absorption of Graphene Oxide Thin Film and Its Application in Pulsed Fiber Lasers
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DOI：
10.1109/jstqe.2014.2312952
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发表时间：
2014-03
影响因子：
4.9
通讯作者：
Xiao-hui Li;Yulong Tang;Zhiyu Yan;Yue Wang;B. Meng;G. Liang;Handong Sun;Xia Yu;Ying Zhang;Xueping Cheng;Qi Jie Wang
中科院分区：
文献类型：
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作者：
Xiao-hui Li;Yulong Tang;Zhiyu Yan;Yue Wang;B. Meng;G. Liang;Handong Sun;Xia Yu;Ying Zhang;Xueping Cheng;Qi Jie Wang
氧化石墨烯(GO)已被用于光强度控制和短脉冲整形。最有趣的是，它可以用作宽带光吸收器。本文在1-2-μm的宽波长范围内系统地研究了这种特性。我们制备了一种GO/聚乙烯醇(GO/PVA)薄膜，并将其分别用作掺Er、Yb和Tm光纤环形激光器的可饱和吸收体，构建了脉冲光纤激光器。结果表明，在1-μm和1.5-μm范围内均可获得较宽的锁模范围。此外，在掺Tm光纤环形激光器中还可以获得波长约为1870 nm的调Q。据我们所知，这是一种类型的GO SA膜可用于构建全光纤脉冲环形激光器的最宽波长范围。
Graphene oxide (GO) has been used for optical intensity manipulation and short pulse shaping. Most interestingly, it can be used as a broadband light absorber. Such property has been systematically investigated in this paper, in a broad wavelength range from 1 to 2-μm. We fabricated one type of GO/polyvinyl alcohol (GO/PVA) film and use it as a saturable absorber (SA) in Er-, Yb-, and Tm-doped fiber ring lasers, respectively, to build pulsed fiber lasers. It is demonstrated that broad range of mode-locking in the 1-μm and 1.5-μm regions can be obtained. In addition, Q-switching around wavelength of 1870 nm can be obtained in a Tm-doped fiber ring lasers. To the best our knowledge, this is the broadest wavelength regime in which one type of GO SA film can be used to build all-fiber pulsed ring lasers.