Controlling the motion of cold molecules with deep periodic optical potentials
Controlling the motion of cold molecules with deep periodic optical potentials
复制标题
DOI：
10.1038/nphys339
复制
发表时间：
2006-07
期刊：
影响因子：
19.6
通讯作者：
R. Fulton;A. Bishop;M. Shneider;P. Barker
中科院分区：
文献类型：
--
作者：
R. Fulton;A. Bishop;M. Shneider;P. Barker
光学力的应用使得对原子运动的前所未有的控制成为可能，从而导致激光冷却和捕获以及玻色-爱因斯坦凝聚。最近，使用静电场操纵冷中性极性分子已被用于在实验室框架中创建慢冷分子。在这里，我们报告的控制操纵的分子使用深周期光学晶格势（22 K）创建的强光场（1011 W cm−2）。通过使用这些电位中的一氧化氮分子的振荡运动，我们已经证明了在分子束中的快速减速或加速到小于535 nm的长度尺度上的明确定义的速度。我们在单个激光脉冲（5.8 ns）中将冷分子束中分子的动能降低了高达50%，展示了对分子束速度的精确控制以及使用光场创建缓慢冷分子的新方法。
The application of optical forces has allowed unprecedented control over the motion of atoms leading to laser cooling and trapping and Bose–Einstein condensation. More recently, the manipulation of cold neutral polar molecules using electrostatic fields has been used to create slow cold molecules in the laboratory frame. Here, we report on the controlled manipulation of molecules using deep periodic optical lattice potentials (22 K) created by intense optical fields (1011W cm−2). By using the oscillatory motion of nitric oxide molecules in these potentials, we have demonstrated rapid deceleration or acceleration in a molecular beam to well-defined velocities on a length scale of less than 535 nm. We reduce the kinetic energy of the molecules in a cold molecular beam by up to 50% in a single laser pulse (5.8 ns) demonstrating precise control of molecular-beam velocity and a new method for creating slow cold molecules using optical fields.