激光方脉冲作用下强场自电离过程  

STRONG-FIELD AUTOIONIZATION BY SQUARE LASER PULSES

作　　者：陈荣清[1] 徐至展[1] 孙岚[1] 姚关华[1] 张文琦[1] 李萍 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《物理学报》1991年第10期1584-1589,共6页Acta Physica Sinica

摘　　要：本文研究了激光方脉冲作用下的强场自电离过程,从而推广了以往包含高阶离化的研究,讨论了基态布居和自电离共振线型在强场下受激光脉宽、光强的影响。结果表明,强场自电离过程及其中的高阶离化不仅与光强有关,而且还和原子与激光相互作用的时间紧密相关。Previous studies on strong-field autoionization involving high-order ionization processes are mainly investigated for the cases of CW laser irradiations. This paper extends those studies to the cases of square laser pulses with arbitrary widths. Populations of the ground state and the line shapes of the autoionizing resonance are discussed. It is shown that strong-field autoionization and the high-order ionization processes are drastically affected not only by the intensities but also by the time of interaction between atoms and laser field.

关 键 词：激光 方脉冲作用 强场 自由离 

分 类 号：O562.4[理学—原子与分子物理]