外文题目: Field-free molecular orientation enhanced by tuning the intensity ratio of a three-color laser field
作者: 黄志远; 王丁; 郑浪; 黎文开; 赵睿睿; 冷雨欣
刊名: Chin. Phys. B
年: 2017 卷: 26 期: 5 文章编号：54209
英文关键词:
molecular orientation; three-color laser field; carrier-envelope phase
GENERATION; DENSITY; PULSES
英文摘要:
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 I-3 : I-2 : I-1 = 0.09 : 0.5 : 1, the molecular orientation can be improved by similar to 20% compared with that of the two-color laser field at intensity ratio I-2 : I-1 = 1 : 1 for the same total laser intensity of 2 x 10(13) W/cm(2). 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.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/1674-1056/26/5/054209


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