Quantum state reconstruction of a rotational wave packet created by a nonresonant intense femtosecond laser field
Quantum state reconstruction of a rotational wave packet created by a nonresonant intense femtosecond laser field
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DOI：
10.1103/physrevlett.101.053002
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发表时间：
2008-08-01
影响因子：
8.6
通讯作者：
Ohshima, Yasuhiro
中科院分区：
文献类型：
--
作者：
Hasegawa, Hirokazu;Ohshima, Yasuhiro
实验测量了非共振强飞秒激光场作用下，制冷苯分子中转动波包的振幅和相位。在该波包重构中，初始波包进一步被第一激光脉冲的复制品干涉，并且以状态分辨的方式观察到所得到的布居调制。虽然在初始条件下填充了几个具有不同核自旋修改的状态，但从其中一个（J = 0）创建的单个波包被专门重建。实验上确定了微扰区以外的分步拉曼激发的相移特性。
We have experimentally determined the amplitudes and phases of a rotational wave packet in an adiabatically cooled benzene molecule, created by a nonresonant intense femtosecond laser field. In this wave-packet reconstruction, the initial wave packet is further interfered by a replica of the first laser pulse, and the resultant modulation in population is observed in a state-resolved manner. Though several states with different nuclear-spin modifications are populated in the initial condition, a single wave packet created from one of them (with J = 0) is specifically reconstructed. Phase shifts characteristic of stepwise Raman excitation beyond the perturbative regime are experimentally identified.