Femtosecond laser desorption of CO from the Pt(111) surface

被引：27

作者：

Cai, L ^{[1
]}

Xiao, XD ^{[1
]}

Loy, MMT ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

SURFACE SCIENCE | 2000年 / 464卷 / 2-3期

关键词：

carbon monoxide; laser methods; photon stimulated desorption (PSD); platinum;

D O I：

10.1016/S0039-6028(00)00754-8

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：

We report the first study of femtosecond desorption of CO from Pt(111), using 800 nm laser pulses with durations from 125 fs to 1.5 ps. The results for the CO/Pt system are qualitatively similar to other diatomic molecule systems previously studied and can be understood using the electronic friction model. We also studied the CO desorption yield using frequency-chirped laser pulses of the same pulse duration. With the chirping magnitude of ca. 1.5% in our experiment we did not observe any difference between positive and negative chirping. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：L727 / L731

页数：5

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