Subcycle Conservation Law in Strong-Field Ionization  

作　　者：Yongzhe Ma Hongcheng Ni Yang Li Feng He Jian Wu 

机构地区：[1]State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,Shanxi 030006,China [3]Key Laboratory for Laser Plasmas(Ministry of Education)and School of Physics and Astronomy,Collaborative Innovation Center for IFSA(CICIFSA),Shanghai Jiao Tong University,Shanghai 200240,China [4]Chongqing Key Laboratory of Precision Optics,Chongqing Institute of East China Normal University,Chongqing 401121,China

出　　处：《Ultrafast Science》2024年第5期66-71,共6页超快科学(英文)

基　　金：supported by the National Natural Science Foundation of China(grant nos.92150105,12227807,12241407,11925405,and 12274294);the Science and Technology Commission of Shanghai Municipality(grant nos.21ZR1420100 and 23JC1402000).

摘　　要：Exploiting the infinite-order continuous dynamical rotational symmetry of circularly or elliptically polarized classical light pulses,we establish the conservation law between the angular momentum and energy in strong-field ionization that is applicable at the subcycle level.We illustrate the conservation law through the correlated spectrum of angular momentum and energy of photoelectrons,both at the tunnel exit and in the asymptotic region.Moreover,we propose a protocol based on electron vortices to directly visualize the existence of the subcycle conservation law.Our work paves the pathway toward a deeper understanding of fundamental light-matter interactions on the subcycle scale.

关 键 词：subcycle conservation law angular momentum strong field ionization circularly polarized light electron vortices correlated spectrum 

分 类 号：O562[理学—原子与分子物理]