控制双激光脉冲的宽度提高N2分子的取向  

Controlling pulse duration of two-pulse laser to enhance alignment of N_2 molecules

作　　者：杨增强[1] 周效信[1] 

机构地区：[1]西北师范大学物理与电子工程学院

出　　处：《物理学报》2008年第7期4099-4103,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10674112);甘肃省自然科学基金(批准号:3ZS061-A25-013);甘肃省教育厅基金(批准号:0601-23);西北师大创新项目(批准号:NWNU-KJCXGC-03-21)资助的课题~~

摘　　要：提出了通过控制双激光脉冲宽度的方法来提高N2分子取向程度.利用数值方法求解了N2分子刚性转子模型在双激光脉冲作用下的薛定谔方程,计算了双原子分子N2在总强度固定的两束激光脉冲作用下,不同脉冲宽度对于N2分子取向的影响.研究结果表明,通过调整两束激光脉冲的宽度,选择合适的延迟时间能够有效提高N2分子的取向程度.The method of enhancing the alignment of N2 molecules by controlling pulse duration of two-pulse laser is proposed. The time-dependent Schr^dinger equation of the rigid rotor model of N2 molecule in the two-pulse laser is solved numerically by using the pseudospectral method. The degree of alignment for N2 molecules by laser pulses with different durations is calculated. The results show that the alignment can be optimized by selecting the pulse duration and the delay time between the two pulses.

关 键 词：双激光脉冲 分子取向 脉冲宽度 

分 类 号：TN24[电子电信—物理电子学]