Circular dichroism in high-order harmonic generation from chiral molecules

被引：50

作者：

Harada, Yoichi ^{[1
]}

Haraguchi, Eisuke ^{[1
]}

Kaneshima, Keisuke ^{[1
]}

Sekikawa, Taro ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Appl Phys, Kita Ku, Kita 13 Nishi 8, Sapporo, Hokkaido 0608628, Japan

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 02期

关键词：

LASER FIELDS; SPECTROSCOPY; POLARIZATION; LIMONENE; STATES;

D O I：

10.1103/PhysRevA.98.021401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this study, circularly polarized high-order harmonic generation (CP-HHG) from a chiral molecule, limonene, by a CP counter-rotating two-color laser field was found to possess circular dichroism. A high-order harmonic spectrum from a limonene enantiomer depends on the combination of the chirality of the enantiomer and the rotation direction of the superimposed two-color laser field in comparison with that of an achiral atom, helium. From the R enantiomer, the harmonic orders with clockwise polarization were generated more efficiently than those with counterclockwise polarization and vice versa. CP-HHG can be a sensitive probe of the chirality of biomolecules on the femtosecond and attosecond timescales.

引用

页数：5

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