基于微纳光纤-单壁碳纳米管可饱和吸收体的被动调Q掺镱光纤激光器

发布时间：2018-03-10 14:32

本文选题：激光器　切入点：光纤激光器　出处：《发光学报》2017年05期 　论文类型：期刊论文

【摘要】：为实现具有高脉冲能量的调Q脉冲激光输出,利用微纳光纤-单壁碳纳米管复合的方法制备可饱和吸收体,并对基于该类型可饱和吸收体器件的被动调Q掺镱光纤激光器进行研究。采用拉伸法将普通单模石英光纤拉制成微纳光纤,将其与单壁碳纳米管溶液复合,进一步制备成全光纤集成型器件。将该器件置于环形腔掺镱光纤激光器中,利用976 nm半导体激光器作为抽运源。当抽运功率为53 mW时,实现了调Q脉冲激光输出,激光中心波长为1 039 nm。进一步提升抽运功率至76 mW,可获得脉冲宽度为3.1μs、重复频率为25.5 kHz、单脉冲能量为941nJ的调Q脉冲激光输出。研究表明,利用微纳光纤制备的可饱和吸收体器件具有较高的损伤阈值,可用于实现高脉冲能量的激光输出。
[Abstract]:In order to realize Q-switched laser output with high pulse energy, saturable absorber was prepared by micro-nano fiber / single-walled carbon nanotube composite method. The passive Q-switched ytterbium-doped fiber laser based on this type of saturable absorber device was studied. The ordinary single-mode quartz fiber was drawn by tensile method to make micro-nano fiber, which was combined with single-walled carbon nanotube solution. An integrated fiber optic device is further fabricated. The device is placed in a ytterbium-doped fiber laser with a ring cavity, and a 976 nm semiconductor laser is used as the pump source. When the pump power is 53 MW, the Q-switched pulse laser output is realized. The central wavelength of the laser is 1 039 nm. The pulse width is 3.1 渭 s, the repetition rate is 25.5 kHz, the single pulse energy is 941 nJ, and the pump power is 76 MW. The saturable absorber devices fabricated by micro-nano fiber have high damage threshold and can be used to realize the laser output of high pulse energy.
【作者单位】：中国科学院国家天文台长春人造卫星观测站;吉林大学集成光电子国家重点联合实验室吉林大学实验区;
【基金】：国家自然科学基金(60908001,61077033,61378004,11274139,61605219) 吉林省青年科研基金(20160520085JH)资助项目~~
【分类号】：TN248

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