Influence of electron Coulomb explosion on photoelectron spectra of dielectrics irradiated by femtosecond laser pulses

被引：6

作者：

Geoffroy, Ghita ^{[1
]}

Duchateau, Guillaume ^{[1
]}

Fedorov, Nikita ^{[1
]}

Martin, Patrick ^{[1
]}

Guizard, Stephane ^{[2
]}

机构：

[1] Univ Bordeaux, CNRS, UMR 5107, Ctr Lasers Intenses & Applicat,CEA, F-33405 Talence, France

[2] Ecole Polytech, CEA, CNRS, UMR 7642,Lab Solides Irradies, F-91128 Palaiseau, France

来源：

LASER PHYSICS | 2014年 / 24卷 / 08期

关键词：

photo-emission; dielectrics; Coulomb explosion; SUBPICOSECOND; ABLATION; FIELD; PHOTOEMISSION; SPECTROSCOPY; IONIZATION; INTENSITY; TRANSPORT; EMISSION; CRYSTALS;

D O I：

10.1088/1054-660X/24/8/086101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photo-emission of electrons from dielectric surfaces induced by intense femtosecond laser pulses with a wavelength of 800 nm is addressed. The energy distribution of electrons emitted from SiO2 and Al2O3 samples is presented for various laser intensities. It appears that the maximum kinetic energy may reach unexpected values up to roughly 3 keV even at moderate intensities. This observation may be explained by invoking electron Coulomb explosion occurring at the surface of the material. Simple modelling calculations support this physical scenario.

引用

页数：6

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