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作 者:Yaoxiang Liu Fukang Yin Tie-Jun Wang Yuxin Leng Ruxin Li Zhizhan Xu See Leang Chin
机构地区:[1]State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics and CAS Center for Excellence in Ultra-intense Laser Science,Chinese Academy of Sciences,Shanghai,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,China [3]Centre d’Optique,Photonique et Laser(COPL)and Département de physique,de génie physique et d’optique,UniversitéLaval,Québec,Québec,Canada
出 处:《Light(Science & Applications)》2024年第2期354-365,共12页光(科学与应用)(英文版)
基 金:This work was supported in part by NSAF(Grant No.U2130123);the International Partnership Program of Chinese Academy of Sciences(Grant Nos.181231KYSB20200033 and 181231KYSB20200040);Shanghai Science and Technology Program(Grant No.21511105000).S.L.C.acknowledges the support of COPL,Laval University,Quebec City,Canada.We thank Dr.Hao Guo,Ms.Na Chen,Mr.Xuan Zhang,Dr.Haiyi Sun from SIOM for help in the experiments and Prof.Howard M.Milchberg from the University of Maryland for the fruitful discussions and his reading of the manuscript.
摘 要:Supercontinuum(SC)light source has advanced ultrafast laser spectroscopy in condensed matter science,biology,physics,and chemistry.Compared to the frequently used photonic crystal fibers and bulk materials,femtosecond laser filamentation in gases is damage-immune for supercontinuum generation.A bottleneck problem is the strong jitters from filament induced self-heating at kHz repetition rate level.We demonstrated stable kHz supercontinuum generation directly in air with multiple mJ level pulse energy.This was achieved by applying an external DC electric field to the air plasma filament.Beam pointing jitters of the 1 kHz air filament induced SC light were reduced by more than 2 fold.The stabilized high repetition rate laser filament offers the opportunity for stable intense SC generation and its applications in air.
关 键 词:INTENSE REPETITION LIGHT
分 类 号:TN24[电子电信—物理电子学]
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