Molecular tunnelling ionization of allyl halides induced by phase-controlled two-colour laser fields

被引：6

作者：

Ohmura, Hideki ^{[1
]}

Saito, Naoaki ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2014年 / 47卷 / 20期

基金：

日本学术振兴会;

关键词：

tunnelling ionization; intense laser fields; phase-controlled laser fields; ELECTROMAGNETIC-FIELD; ATOMS;

D O I：

10.1088/0953-4075/47/20/204007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated the molecular tunnelling ionization (TI) of four allyl halide molecules (C3H5X; X = F, Cl, Br, I) induced by phase-controlled two-colour laser fields consisting of a fundamental light and a second-harmonic light with a pulse duration of 130 fs and an intensity of 10(12)-10(13) W cm(-2). The geometric structure of the highest occupied molecular orbital (HOMO) of the four allyl halides can be systematically changed by replacing the halogen atom. We observed phase-dependent orientation-selective molecular ionization in the four methyl halide molecules. The mechanism of molecular TI is discussed in connection with the geometric structure of the HOMO.

引用

页数：6

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