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	High conversion efficiency, high power density Q-switched fiber laser
	Chen X(陈霄) ; Xiao QR(肖起榕) ; Jin GY(金光勇) ; Yan P(闫平) ; Gong ML(巩马理) ; Chen Xiao ; Xiao Qi-Rong ; Jin Guang-Yong ; Yan Ping ; Gong Ma-Li
	2016-03-30 ; 2016-03-30
关键词	Q-switching wide spectrum fiber lasers laser diode-pumped peak power TN248
其他题名	High conversion efficiency, high power density Q-switched fiber laser
中文摘要	An acoustic–optic Q-switched all-fiber laser with a high-repetition-rate, a short pulse width, a wide spectrum, and a high conversion efficiency is experimentally demonstrated. In the laser configuration, a(1+1)×1 side-pumping coupler is introduced to perform backward pumping, and a 10/130-μm Yb fiber is adopted. The acoustic–optic component operates in the first direction, achieving a Q-switched pulse with a repetition rate adjustable in the range of 20 kHz–80 kHz. Under a repetition rate of 20 kHz and a pump power of 6.76 W, the fiber laser obtains a highly efficient and stable pulse output, with an average power of 4.3 W, a pulse width of 56 ns, a peak power of 3.83 kW, and a power density of 1.39×1010W/cm2.Particularly, the optic–optic conversion efficiency of the laser reaches as high as 64%. Another feature of the pulsed laser is that the high reflection mirror reflects the pump light as well, which brings the secondary absorption of the pump power into the gain fiber.; An acoustic–optic Q-switched all-fiber laser with a high-repetition-rate, a short pulse width, a wide spectrum, and a high conversion efficiency is experimentally demonstrated. In the laser configuration, a(1+1)×1 side-pumping coupler is introduced to perform backward pumping, and a 10/130-μm Yb fiber is adopted. The acoustic–optic component operates in the first direction, achieving a Q-switched pulse with a repetition rate adjustable in the range of 20 kHz–80 kHz. Under a repetition rate of 20 kHz and a pump power of 6.76 W, the fiber laser obtains a highly efficient and stable pulse output, with an average power of 4.3 W, a pulse width of 56 ns, a peak power of 3.83 kW, and a power density of 1.39×1010W/cm2.Particularly, the optic–optic conversion efficiency of the laser reaches as high as 64%. Another feature of the pulsed laser is that the high reflection mirror reflects the pump light as well, which brings the secondary absorption of the pump power into the gain fiber.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144552]
专题	清华大学
推荐引用方式 GB/T 7714	Chen X,Xiao QR,Jin GY,et al. High conversion efficiency, high power density Q-switched fiber laser[J],2016, 2016.
APA	陈霄.,肖起榕.,金光勇.,闫平.,巩马理.,...&Gong Ma-Li.(2016).High conversion efficiency, high power density Q-switched fiber laser..
MLA	陈霄,et al."High conversion efficiency, high power density Q-switched fiber laser".(2016).

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