High-order Harmonic Spectroscopy : Experimental and Theoretical study of Cooper Minimum in Argon

被引：1

作者：

Higuet, J. ^{[1
]}

Ruf, H. ^{[1
]}

Thire, N. ^{[2
]}

Cireasa, R. ^{[2
]}

Constant, E. ^{[1
]}

Cormier, E. ^{[1
]}

Descamps, D. ^{[1
]}

Mevel, E. ^{[1
]}

Petit, S. ^{[1
]}

Pons, B. ^{[1
]}

Mairesse, Y. ^{[1
]}

Fabre, B. ^{[1
]}

机构：

[1] Univ Bordeaux 1, CELIA, F-33405 Talence, France

[2] Univ Paul Sabatier, IRSAMC LCAR, F-31062 Toulouse 04, France

来源：

XXVII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC 2011), PTS 1-15 | 2012年 / 388卷

关键词：

PHOTOIONIZATION;

D O I：

10.1088/1742-6596/388/2/022023

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We study the Cooper minimum in HHG from argon atoms using long wavelength laser pulses. We find that the minimum in high harmonic spectra is systematically shifted with respect to total photoionization cross section measurements. We use a semi-classical theoretical approach based on Classical Trajectory Monte Carlo and Quantum Electron Scattering methods (CTMC-QUEST) to model the experiment. Our study reveals that the shift between photoionization and high harmonic emission is due to several effects: the directivity of the recombining electrons and emitted polarization, and the shape of the recolliding electron wavepacket.

引用

页数：1

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