Collective rotation of molecules driven by the angular momentum of light in a nematic film.
Collective rotation of molecules driven by the angular momentum of light in a nematic film.
复制标题
向列膜中的分子由光的角动量驱动的集体旋转。
DOI：
10.1103/physrevlett.57.2423
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发表时间：
1986
影响因子：
8.6
通讯作者：
Shen
中科院分区：
文献类型：
--
作者：
Santamato;Daino;Romagnoli;Settembre;Shen
实验证明，如果激光强度高于Freedericksz跃迁的阈值，则垂直入射在垂直取向的薄膜上的圆偏振激光束可以诱导薄膜中分子的集体进动。示出的效果是由于从激光束到介质的角动量的转移。
It is experimentally demonstrated that a circularly polarized laser beam normally incident on a homeotropically aligned nematic film can induce a collective precession of the molecules in the film if the laser intensity is above the threshold for the Freedericksz transition. The effect is shown to result from a transfer of angular momentum from the laser beam to the medium.