Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field

doi:10.1088/1674-1056/26/5/054209

中国物理B ›› 2017, Vol. 26 ›› Issue (5): 54209-054209.doi: 10.1088/1674-1056/26/5/054209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field

Zhi-Yuan Huang(黄志远), Ding Wang(王丁), Lang Zheng(郑浪), Wen-Kai Li(黎文开), Rui-Rui Zhao(赵睿睿), Yu-Xin Leng(冷雨欣)

1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 Jiangxi Provincial Education Examination Authority, Nangchang 330038, China

收稿日期:2016-11-30 修回日期:2017-01-15 出版日期:2017-05-05 发布日期:2017-05-05
通讯作者: Yu-Xin Leng E-mail:lengyuxin@siom.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61221064, 61078037, 11134010, 61205208, and 61521093), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB16), and the International S&T Cooperation Program of China (Grant No. 2016YFE0119300).

Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field

Zhi-Yuan Huang(黄志远)¹, Ding Wang(王丁)¹, Lang Zheng(郑浪)², Wen-Kai Li(黎文开)¹, Rui-Rui Zhao(赵睿睿)¹, Yu-Xin Leng(冷雨欣)¹

1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 Jiangxi Provincial Education Examination Authority, Nangchang 330038, China

Received:2016-11-30 Revised:2017-01-15 Online:2017-05-05 Published:2017-05-05
Contact: Yu-Xin Leng E-mail:lengyuxin@siom.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61221064, 61078037, 11134010, 61205208, and 61521093), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB16), and the International S&T Cooperation Program of China (Grant No. 2016YFE0119300).

摘要/Abstract

摘要：

We theoretically study the field-free molecular orientation induced by a three-color laser field. The three-color laser field with a large asymmetric degree can effectively enhance the molecular orientation. In particular, when the intensity ratio of the three-color laser field is tuned to a proper value of I₃:I₂:I₁ = 0.09:0.5:1, the molecular orientation can be improved by ～ 20% compared with that of the two-color laser field at intensity ratio I₂:I₁ = 1:1 for the same total laser intensity of 2× 10¹³ W/cm². Moreover, we investigate the effect of the carrier-envelope phase (CEP) on the molecular orientation and use the asymmetric degree of the laser field to explain the result. We also show the influences of the laser intensity, rotational temperature, and pulse duration on the molecular orientation. These results are meaningful for the theoretical and experimental studies on the molecular orientation.

关键词: molecular orientation, three-color laser field, carrier-envelope phase

Abstract:

Key words: molecular orientation, three-color laser field, carrier-envelope phase

中图分类号: (Quantum optics)

42.50.-p

33.80.-b (Photon interactions with molecules) 33.20.Sn (Rotational analysis)

黄志远, 王丁, 郑浪, 黎文开, 赵睿睿, 冷雨欣. Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field[J]. 中国物理B, 2017, 26(5): 54209-054209.

Zhi-Yuan Huang(黄志远), Ding Wang(王丁), Lang Zheng(郑浪), Wen-Kai Li(黎文开), Rui-Rui Zhao(赵睿睿), Yu-Xin Leng(冷雨欣). Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field[J]. Chin. Phys. B, 2017, 26(5): 54209-054209.

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Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field

Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field

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