Laser-field-free molecular orientation
Laser-field-free molecular orientation
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DOI：
10.1103/physrevlett.101.013001
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发表时间：
2008-07-04
影响因子：
8.6
通讯作者：
Sakai, Hirofumi
中科院分区：
文献类型：
--
作者：
Goban, Akihisa;Minemoto, Shinichirou;Sakai, Hirofumi
我们证明了激光场自由分子取向与一个温和的静电场和一个强烈的非共振快速关闭的激光场，它可以与等离子体快门技术的组合。我们使用OCS（羰基硫）分子作为样品。分子取向是在激光脉冲的上升段产生的，并且发现它在OCS分子的旋转周期附近复活，具有与在几乎无激光场条件下的激光脉冲的峰值处相同的取向度。这一成就意味着一类新的分子样品已可用于各种应用。
We demonstrate laser-field-free molecular orientation with the combination of a moderate electrostatic field and an intense nonresonant rapidly turned-off laser field, which can be shaped with the plasma shutter technique. We use OCS (carbonyl sulfide) molecules as a sample. Molecular orientation is adiabatically created in the rising part of the laser pulse, and it is found to revive at around the rotational period of an OCS molecule with the same degree of orientation as that at the peak of the laser pulse in the virtually laser-field-free condition. This accomplishment means that a new class of molecular sample has become available for various applications.