Field-free molecular orientation induced by combined femtosecond single-and dual-color laser pulses: The role of delay time and quantum interference

被引：0

作者：

秦朝朝 ^{[1
,2
]}

贾光瑞 ^{[1
]}

张现周 ^{[1
]}

刘玉芳 ^{[1
]}

龙金友 ^{[2
]}

张冰 ^{[2
]}

机构：

[1] Department of Physics, Henan Normal University

[2] State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences

来源：

Chinese Physics B | 2014年 / 23卷 / 01期

关键词：

molecular orientation; femtosecond dual-color laser pulse; quantum interference;

D O I：

暂无

中图分类号：

O561 [分子物理学]; TN24 [激光技术、微波激射技术];

学科分类号：

070203 ; 1406 ; 0803 ; 080401 ; 080901 ;

摘要：

The coherent control of field-free molecular orientation of CO with combined femtosecond single- and dual-color laser pulses has been theoretically studied. The effect of the delay time between the femtosecond single- and dual-color laser pulses is discussed, and the physical mechanism of the enhancement of molecular orientation with pre-alignment of the molecule is investigated. It is found that the basic mechanism is based on the creation of a rotational wave packet by the femtosecond single-color laser pulse. Furthermore, we investigate the interference between multiple rotational excitation pathways following pre-alignment with femtosecond single-color laser pulse. It is shown that such interference can lead to an enhancement of the orientation of CO molecule by a factor of 1.6.

引用

页码：205 / 209

页数：5

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