High-energy passively Q-switched 2 μm Tm(3+)-doped double-clad fiber laser using graphene-oxide-deposited fiber taper.
High-energy passively Q-switched 2 μm Tm(3+)-doped double-clad fiber laser using graphene-oxide-deposited fiber taper.
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DOI：
10.1364/oe.21.000204
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发表时间：
2013-01
期刊：
影响因子：
3.8
通讯作者：
Chun Liu;C. Ye;Zhengqian Luo;Huihui Cheng;Duanduan Wu;Yonglong Zheng;Z. Liu;B. Qu
中科院分区：
文献类型：
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作者：
Chun Liu;C. Ye;Zhengqian Luo;Huihui Cheng;Duanduan Wu;Yonglong Zheng;Z. Liu;B. Qu
首次报道了利用氧化石墨烯沉积的锥形光纤作为可饱和吸收体的高能调Q双包层掺Tm光纤激光器，其工作波长为2μm。由于氧化石墨烯与锥形腰部的逝去场之间的侧向相互作用，GODTF器件有可能提供较高的激光损伤阈值。利用788 nm半导体激光器作为泵浦光源，获得了稳定的单横模Q开关脉冲，单脉冲能量为6.71μJ(对应于平均功率302 mW)，波长为2032 nm。这远远高于迄今为止任何使用石墨烯或石墨烯氧化物Q开关的稀土掺杂光纤激光器的最高脉冲能量/平均功率。本文所展示的TDFL是石墨烯或石墨烯氧化物基调Q 2μm TDFL实际应用的令人鼓舞的一步。
We have demonstrated a high-energy Q-switched double-clad thulium-doped fiber laser (TDFL) using a graphene-oxide-deposited tapered fiber (GODTF) device as a saturable absorber operating at a wavelength of 2 μm for the first time. Because of the side-interaction of the graphene-oxide with the evanescent field on the taper waist, the GODTF devices have potential for offering high laser damage threshold. Using a 788 nm laser diode as the pump source, the TDFL generated stable single transverse mode Q-switched pulses with a single pulse energy of 6.71 μJ (corresponding to an average power of 302 mW) at a wavelength of 2032 nm. This is significantly higher than the highest pulse energy/average power from any rare-earth-doped fiber lasers employing a graphene or graphene-oxide based Q-switch so far. The demonstrated TDFL in this paper represents an encouraging step towards the practical applications of graphene or graphene-oxide based Q-switched 2 μm TDFLs.