Air lasing: Phenomena and mechanisms  

作　　者：Helong Li Danwen Yao Siqi Wang Yao Fu Huailiang Xu 李贺龙;姚丹雯;王思琪;付尧;徐淮良(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China;State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China;State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China [2]State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China [3]State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China

出　　处：《Chinese Physics B》2019年第11期43-51,共9页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61625501,61427816,and 11904121);the Open Fund of the State Key Laboratory of High Field Laser Physics(SIOM),China;the Program for JLU Science and Technology Innovative Research Team(JLUSTIRT),China(Grant No.2017TD-21);Fundamental Research Funds for the Central Universities of China

摘　　要：Air lasing is a concept that refers to remote no-cavity(mirrorless) optical amplification in ambient air with the air constituents as the gain media. Due to the high potential of air lasing in view of applications in atmospheric sensing, a variety of pumping schemes have been proposed so far for building up population-inverted gain media in air and producing forward and/or backward directional lasing emissions. This review paper presents an overview of recent advances in the experimental observations and physical understanding of air lasing in various pumping schemes of air molecules by intense laser fields. Special emphasis is given to the strong-field-induced N^+2 air lasing, the mechanism of which is currently still in a hot debate.Air lasing is a concept that refers to remote no-cavity(mirrorless) optical amplification in ambient air with the air constituents as the gain media. Due to the high potential of air lasing in view of applications in atmospheric sensing, a variety of pumping schemes have been proposed so far for building up population-inverted gain media in air and producing forward and/or backward directional lasing emissions. This review paper presents an overview of recent advances in the experimental observations and physical understanding of air lasing in various pumping schemes of air molecules by intense laser fields. Special emphasis is given to the strong-field-induced N+2 air lasing, the mechanism of which is currently still in a hot debate.

关 键 词：AIR LASING INTENSE laser FIELDS nitrogen MOLECULES 

分 类 号：TN2[电子电信—物理电子学]