Role of the intramolecular phase in high-harmonic generation

被引：479

作者：

Lein, M ^{[1
]}

Hay, N ^{[1
]}

Velotta, R ^{[1
]}

Marangos, JP ^{[1
]}

Knight, PL ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.88.183903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study numerically the generation of high-order harmonics by two-center molecules for arbitrary angles between the molecular axis and the laser polarization axis. For fixed angle, the harmonic spectrum exhibits a minimum at a frequency which is independent of the laser parameters. The amplitude of each harmonic is strongly angle dependent, and a pronounced minimum is found at the same angle where a sudden jump in the harmonic phase occurs. By calculating the spatial dependence of the harmonic amplitudes and phases, we are able to explain these effects in terms of interfering contributions from various regions within the molecule.

引用

页码：4 / 183903

页数：4

共 21 条

[1] High-order harmonic generation by one- and two-electron molecular ions with intense laser pulses [J].

Bandrauk, AD ;

Yu, HT .

PHYSICAL REVIEW A, 1999, 59 (01) :539-548

[2] CALCULATION OF THE BACKGROUND EMITTED DURING HIGH-HARMONIC GENERATION [J].

BURNETT, K ;

REED, VC ;

COOPER, J ;

KNIGHT, PL .

PHYSICAL REVIEW A, 1992, 45 (05) :3347-3349

[3] PLASMA PERSPECTIVE ON STRONG-FIELD MULTIPHOTON IONIZATION [J].

CORKUM, PB .

PHYSICAL REVIEW LETTERS, 1993, 71 (13) :1994-1997

[4] SPECTRUM OF LIGHT SCATTERED COHERENTLY OR INCOHERENTLY BY A COLLECTION OF ATOMS [J].

EBERLY, JH ;

FEDOROV, MV .

PHYSICAL REVIEW A, 1992, 45 (07) :4706-4712

[5] SOLUTION OF THE SCHRODINGER-EQUATION BY A SPECTRAL METHOD [J].

FEIT, MD ;

FLECK, JA ;

STEIGER, A .

JOURNAL OF COMPUTATIONAL PHYSICS, 1982, 47 (03) :412-433

[6] Multielectron effects on single-electron strong field ionization [J].

Guo, CL .

PHYSICAL REVIEW LETTERS, 2000, 85 (11) :2276-2279

[7] GENERATION OF HIGH-ORDER HARMONICS FROM INERTIALLY CONFINED MOLECULAR-IONS [J].

IVANOV, MY ;

CORKUM, PB .

PHYSICAL REVIEW A, 1993, 48 (01) :580-590

[8] Model calculations of high-harmonic generation in molecular ions [J].

Kopold, R ;

Becker, W ;

Kleber, M .

PHYSICAL REVIEW A, 1998, 58 (05) :4022-4038

[9] Even-harmonic generation due to beyond-Born-Oppenheimer dynamics [J].

Kreibich, T ;

Lein, M ;

Engel, V ;

Gross, EKU .

PHYSICAL REVIEW LETTERS, 2001, 87 (10) :art. no.-103901

[10] SPECTRUM OF LIGHT SCATTERED BY A STRONGLY DRIVEN ATOM [J].

LAPPAS, DG ;

FEDOROV, MV ;

EBERLY, JH .

PHYSICAL REVIEW A, 1993, 47 (02) :1327-1335

← 1 2 3 →