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中文摘要：
利用数值方法模拟O2分子在短脉冲激光场中的转动波包,从理论上研究了在两束短脉冲激光驱动下O2分子的取向程度.在相同的环境温度下,与单脉冲激光驱动相比,通过优化两束激光脉冲的强度比和时间延迟,可以有效提高O2分子的取向程度.研究表明,当两束激光脉冲的强度比约为1：3,时间延迟为11.73ps时,O2分子可以达到很好的取向效果.
英文摘要：
By simulating numerically rotational wavepacket of O2 molecules in short pulse laser field,alignment of O2 drived by two-short-pulse laser is investigated theoretically.Compared to alignment of O2 drived by single pulse laser field,under the same temperature,the alignment degree of O2 molecules increase effectively by optimizing intensity ratio and delay time of two pulses.The results show that alignment could be maximum with intensity ratio 1∶3 approximately and delay time 11.73 ps.
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