Frequency-resolved time-gated high-order harmonics

被引：68

作者：

Altucci, C

Delfin, C

Roos, L

Gaarde, MB

L'Huillier, A

Mercer, I

Starczewski, T

Wahlstrom, CG

机构：

[1] Lund Inst Technol, Dept Phys, S-22100 Lund, Sweden

[2] INFM, Sez Napoli, Naples, Italy

[3] Niels Bohr Inst, Orsted Lab, DK-2100 Copenhagen, Denmark

[4] Imperial Coll, Dept Biochem & Chem, London, England

来源：

PHYSICAL REVIEW A | 1998年 / 58卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.58.3934

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report measurements of high-order harmonic spectra obtained with a 800-nm 150-fs loser pulse with a time-varying degree of ellipticity. The modulation of the polarization in time is achieved by using birefringent optics and self-phase modulation in a glass plate. We can create one or two temporal gates of a few femtoseconds width, during which the polarization is linear and harmonic emission is efficient. The harmonic spectra observed experimentally demonstrate that harmonics generated with linear polarization are frequency chirped. The values measured experimentally are consistent with theoretical predictions based on the strong field approximation. [S1050-2947(98)05511-5].

引用

页码：3934 / 3941

页数：8

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