Femtosecond laser ablation of sapphire: time-of-flight analysis of ablation plume

被引：97

作者：

Varel, H ^{[1
]}

Wahmer, M ^{[1
]}

Rosenfeld, A ^{[1
]}

Ashkenasi, D ^{[1
]}

Campbell, EEB ^{[1
]}

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12474 Berlin, Germany

来源：

APPLIED SURFACE SCIENCE | 1998年 / 127卷

关键词：

D O I：

10.1016/S0169-4332(97)00622-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Time-of-flight mass spectrometry has been used to investigate the mass and velocity distributions of positive ions produced on laser ablation of sapphire with ultrashort (200 fs) laser pulses at a wavelength of 790 nm. Aluminium and oxygen ions were observed with the proportion of singly and doubly charged oxygen ions increasing with increasing number of laser shots Fur a given laser fluence. The ions have extremely high kinetic energies which is attributed to Coulomb explosion from charged defect sites. (C) 1998 Elsevier Science B.V.

引用

页码：128 / 133

页数：6

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