Double ionization of helium in an elliptically polarized laser field

被引：7

作者：

Watson, JB

Burnett, K

Knight, PL

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Opt Sect, London SW7 2BZ, England

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2000年 / 33卷 / 04期

关键词：

D O I：

10.1088/0953-4075/33/4/101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this letter we discuss the double ionization of helium in intense, elliptically polarized laser fields. We extend a model previously used for linear polarizations to the case of a two-dimensional model atom subject to a laser field of arbitrary ellipticity. Our results show a decrease in the efficiency of the non-sequential double ionization as the ellipticity of the driving field is increased, consistent with the recollision picture of double ionization. Our results are in qualitative agreement with previous experimental measurements.

引用

页码：L103 / L109

页数：7

共 26 条

[11]

KULANDER KC, 1993, P WORKSH SILAP SUP I, V3

[12]

Kulander KC., 1992, Atoms in intense laser fields

[13] Two-electron effects in harmonic generation and ionization from a model He atom [J].

Lappas, DG ;

Sanpera, A ;

Watson, JB ;

Burnett, K ;

Knight, PL ;

Grobe, R ;

Eberly, JH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (16) :L619-L627

[14] THEORY OF HIGH-HARMONIC GENERATION BY LOW-FREQUENCY LASER FIELDS [J].

LEWENSTEIN, M ;

BALCOU, P ;

IVANOV, MY ;

LHUILLIER, A ;

CORKUM, PB .

PHYSICAL REVIEW A, 1994, 49 (03) :2117-2132

[15] Intense-field multiphoton ionization of a two-electron atom [J].

Parker, J ;

Taylor, KT ;

Clark, CW ;

BlodgettFord, S .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (02) :L33-L42

[16] Intense-field multiphoton ionization of helium [J].

Parker, JS ;

Smyth, ES ;

Taylor, KT .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1998, 31 (14) :L571-L578

[17] VALIDITY OF TIME-DEPENDENT HARTREE-FOCK THEORY FOR THE MULTIPHOTON IONIZATION OF ATOMS [J].

PINDZOLA, MS ;

GRIFFIN, DC ;

BOTTCHER, C .

PHYSICAL REVIEW LETTERS, 1991, 66 (18) :2305-2307

[18] High-order harmonics of 248.6-nm KrF laser from helium and neon ions [J].

Preston, SG ;

Sanpera, A ;

Zepf, M ;

Blyth, WJ ;

Smith, CG ;

Wark, JS ;

Key, MH ;

Burnett, K ;

Nakai, M ;

Neely, D ;

Offenberger, AA .

PHYSICAL REVIEW A, 1996, 53 (01) :R31-R34

[19] Strong field ionization in arbitrary laser polarizations [J].

Protopapas, M ;

Lappas, DG ;

Knight, PL .

PHYSICAL REVIEW LETTERS, 1997, 79 (23) :4550-4553

[20] Can harmonic generation cause non-sequential ionization? [J].

Sanpera, A ;

Watson, JB ;

Shaw, SEJ ;

Knight, PL ;

Burnett, K ;

Lewenstein, M .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1998, 31 (19) :L841-L848

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