Slowing of supersonically cooled atoms and molecules by time-varying nonresonant induced dipole forces
Slowing of supersonically cooled atoms and molecules by time-varying nonresonant induced dipole forces
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DOI：
10.1103/physreva.61.025403
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发表时间：
2000-01
影响因子：
2.9
通讯作者：
B. Friedrich
中科院分区：
文献类型：
--
作者：
B. Friedrich
哈佛大学化学与化学生物学系和物理系，剑桥，马萨诸塞州 02138~1999 年 8 月 17 日收稿；发表于 2000 年 1 月 14 日！我们描述了一种减缓分子或原子速度的通用方法！它依赖于与非共振激光场的极化相互作用产生的高场寻找状态。采用脉冲超音速束扩展来预冷却分子内部并缩小其速度分布。分子被扫描仪控制的非共振激光束以直角舀出，并通过逐渐降低光束的角速度在圆形路径上减速。PACS 编号~s!：32.80.Pj、33.80.Ps、33.55.Be、39.10.1j
Department of Chemistry and Chemical Biology and Department of Physics, Harvard University, Cambridge, Massachusetts 02138~Received 17 August 1999; published 14 January 2000!We describe a versatile method for slowing molecules ~or atoms! which relies on high-field-seeking statescreated by the polarizability interaction with a nonresonant laser field. A pulsed supersonic beam expansion isemployed to precool the molecules internally and to narrow their velocity spread. The molecules are scoopedat right angles by a nonresonant laser beam steered by a scanner and decelerated on a circular path by graduallyreducing the beam’s angular speed.PACS number~s!: 32.80.Pj, 33.80.Ps, 33.55.Be, 39.10.1j