High-harmonic spectroscopy of molecular isomers

被引：30

作者：

Wong, M. C. H. ^{[1
]}

Brichta, J-P. ^{[1
]}

Spanner, M. ^{[2
]}

Patchkovskii, S. ^{[2
]}

Bhardwaj, V. R. ^{[1
]}

机构：

[1] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[2] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

GAUSSIAN-BASIS SETS; MULTIPHOTON IONIZATION; MULTIELECTRON DYNAMICS; ELECTRON;

D O I：

10.1103/PhysRevA.84.051403

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate that high-order-harmonic generation (HHG) spectroscopy can be used to probe stereoisomers of randomly oriented 1,2-dichloroethylene (C2H2Cl2) and 2-butene (C4H8). The high-harmonic spectra of these isomers are distinguishable over a range of laser intensities and wavelengths. Time-dependent numerical calculations of angle-dependent ionization yields for 1,2-dichloroethylene suggest that the harmonic spectra of molecular isomers reflect differences in their strong-field ionization. The subcycle ionization yields for the cis isomer are an order of magnitude higher than those for the trans isomer. The sensitivity in discrimination of the harmonic spectra of cis- and trans- isomers is greater than 8 and 5 for 1,2-dichloroethylene and 2-butene, respectively. We show that HHG spectroscopy cannot differentiate the harmonic spectra of the two enantiomers of the chiral molecule propylene oxide (C3H6O).

引用

页数：4

共 33 条

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