摘要
高峰值功率的超短脉冲激光器在激光精细微加工等领域具有重要应用价值。以超大模场光纤为增益介质对超短脉冲激光进行功率放大,是实现高光束质量、高峰值功率超短脉冲激光输出的有效技术手段。以脉冲宽度、重复频率可调的1030nm锁模光纤激光器为种子光源,通过多级全光纤功率预放大和以超大模场棒状光子晶体光纤(PCF)为增益介质的功率放大器,搭建了高峰值功率皮秒脉冲光子晶体光纤放大器系统。实验研究了棒状PCF放大器的输出特性,在脉冲宽度为30ps时实现了峰值功率为2.94 MW的近衍射极限激光放大输出。
High-peak-power ultrashort pulse lasers are currently in demand for laser micromachining. It is an effective technique to use ultra-large-mode-field fibers to amplify the power of ultrashort laser pulses, for realizing ultrashort output laser pulses with high beam quality and high peak power. Based on a 1030 nm mode-locked tunable fiber laser, multi-stages of all-fiber preamplifiers and ultra-large-mode-field rod-type photonic crystal fiber （PCF）, the output properties of rod-PCF amplifiers are demonstrated. The amplifier delivers near-diffraction-limit 30 ps pulses with maximum peak power of 2.94 MW.
作者
王子薇
王兆坤
邹峰
吴闻迪
李秋瑞
白洋
周军
Wang Ziwei Wang Zhaokun Zou Feng Wu Wendi Li Qiurui Bai Yang Zhou Jun(Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2016年第10期11-17,共7页
Chinese Journal of Lasers
基金
国家863计划(2014AA041901)
国家自然科学基金(U1330134
61308024)
