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瓦级输出全光纤结构2.0μm掺铥皮秒脉冲光纤激光器
引用本文:刘江,王璞.瓦级输出全光纤结构2.0μm掺铥皮秒脉冲光纤激光器[J].中国激光,2012,39(8):802004-26.
作者姓名:刘江  王璞
作者单位:刘江:北京工业大学激光工程研究院, 国家产学研激光技术中心, 北京 100124
王璞:北京工业大学激光工程研究院, 国家产学研激光技术中心, 北京 100124
基金项目:国家自然科学基金(61177048)和北京市自然科学基金重点项目(KZ2011100050011)资助课题。
摘    要:研制了高功率全光纤结构2μm波段掺铥皮秒脉冲光纤激光器。该激光器采用了主振荡功率放大(MOPA)结构设计,种子源采用790nm的多模半导体激光器作为抽运源、双包层掺铥光纤作为激光增益介质、半导体可饱和吸收镜(SESAM)作为锁模器件,从而实现了重复频率为10.4MHz的皮秒激光脉冲输出,其最大平均输出功率为15mW。种子源经过一级掺铥光纤放大器后,获得了1.1W高平均功率输出,相应的单脉冲能量高达105nJ,激光脉冲宽度为9ps,峰值功率为11.6kW。此时测得激光脉冲的中心波长为1963nm,3dB光谱带宽为0.5nm。

关 键 词:激光器  光纤激光器  光纤放大器  超快激光  掺铥光纤  被动锁模
收稿时间:2012/3/12

2 μm Thulium-Doped Ultrafast All-Fiber Laser with Watts-Level Average Output Power
Liu Jiang Wang Pu.2 μm Thulium-Doped Ultrafast All-Fiber Laser with Watts-Level Average Output Power[J].Chinese Journal of Lasers,2012,39(8):802004-26.
Authors:Liu Jiang Wang Pu
Affiliation:Liu Jiang Wang Pu(National Center of Laser Technology,Institute of Laser Engineering,Beijing University of Technology, Beijing 100124,China)
Abstract:A high-power 2.0 μm thulium-doped ultrafast all-fiber master oscillator power amplifier (MOPA) is developed. The seed source is a thulium-doped double-clad single-mode fiber laser passively mode-locked by a semiconductor saturable absorber mirror (SESAM). It produces about 15 mW average output power with 10.4 MHz repetition rate. A thulium-doped all-fiber amplifier is used to boost average output power to 1.1 W, corresponding to the single pulse energy of 105 nJ. The pulse width is measured to be 9 ps, the center wavelength and the spectral bandwidth are 1963 nm and 0.5 nm respectively. To the best of our knowledge, this is the first report for all-fiber thulium-doped ultrafast fiber laser with watts-level average output power.
Keywords:lasers  fiber laser  fiber amplifier  ultrafast laser  thulium-doped fiber  passively mode-locked
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