Keldysh theory of strong-field ionization

被引:7
作者
Long, Zi Jian [1 ]
Liu, Wing-Ki [1 ]
机构
[1] Univ Waterloo, Guelph Waterloo Phys Inst, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
ABOVE-THRESHOLD-IONIZATION; HIGH-HARMONIC GENERATION; MULTIPHOTON IONIZATION; S-MATRIX; ATOMS; APPROXIMATION; ELECTRONS; ANATOMY; COULOMB; TUNNEL;
D O I
10.1139/P09-111
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper. we provide a detailed derivation of the strong-field ionization rates originally developed by Keldysh who introduced the strong-field approximation. Numerical results are presented to examine the saddle-point approximation, the low photoelectron energy approximation, and neglecting the interference terms, which are necessary to arrive at the simple quasistatic result, when the Keldysh parameter becomes very small.
引用
收藏
页码:227 / 245
页数:19
相关论文
共 58 条
[1]  
Abramowitz M., 1972, HDB MATH FUNCTIONS
[2]  
Ammosov M. V., 1986, Soviet Physics - JETP, V64, P1191
[3]  
[Anonymous], 1964, RELATIVISTIC QUANTUM
[4]   Single-active-electron approximation for describing molecules in ultrashort laser pulses and its application to molecular hydrogen [J].
Awasthi, Manohar ;
Vanne, Yulian V. ;
Saenz, Alejandro ;
Castro, Alberto ;
Decleva, Piero .
PHYSICAL REVIEW A, 2008, 77 (06)
[5]   Strong-field approximation for intense-laser-atom processes: The choice of gauge [J].
Bauer, D ;
Milosevic, DB ;
Becker, W .
PHYSICAL REVIEW A, 2005, 72 (02)
[6]   Low-frequency-high-intensity limit of the Keldysh-Faisal-Reiss theory [J].
Bauer, J .
PHYSICAL REVIEW A, 2006, 73 (02)
[7]   Intense-field many-body S-matrix theory [J].
Becker, A ;
Faisal, FHM .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2005, 38 (03) :R1-R56
[8]   Above-threshold ionization: From classical features to quantum effects [J].
Becker, W ;
Grasbon, F ;
Kopold, R ;
Milosevic, DB ;
Paulus, GG ;
Walther, H .
ADVANCES IN ATOMIC, MOLECULAR, AND OPTICAL PHYSICS, VOL 48, 2002, 48 :35-98
[9]   MODELING HARMONIC-GENERATION BY A ZERO-RANGE POTENTIAL [J].
BECKER, W ;
LONG, S ;
MCIVER, JK .
PHYSICAL REVIEW A, 1994, 50 (02) :1540-1560
[10]   KELDYSH-LIKE EXPANSION FOR ABOVE-THRESHOLD IONIZATION [J].
BECKER, W ;
DAVIDOVICH, L ;
MCIVER, JK .
PHYSICAL REVIEW A, 1994, 49 (02) :1131-1140