Fast switching of alkali atom dispensers using laser-induced heating
Fast switching of alkali atom dispensers using laser-induced heating
复制标题
使用激光诱导加热快速切换碱原子分配器
DOI：
10.1063/1.2038167
复制
发表时间：
2005
影响因子：
1.6
通讯作者：
C. Adams
中科院分区：
文献类型：
--
作者：
P. Griffin;K. Weatherill;C. Adams
我们证明，通过使用强激光源局部加热碱原子分配器，可以产生高通量的原子，然后在激光熄灭时背景压力快速恢复（<100ms）。对于重复加热脉冲，原子通量的开启时间很容易达到 200 毫秒。该技术适用于使用简单的超高真空 (UHV) 室进行超冷原子实验。激光诱导加热提供了实验周期的快速重复，再加上背景气体碰撞导致的低原子损失，对于涉及远距离共振光陷阱的实验特别有用，其中可以随时获得足够的激光功率（0.5-4W）。
We show that by using an intense laser source to locally heat an alkali atom dispenser, one can generate a high flux of atoms followed by fast recovery (<100ms) of the background pressure when the laser is extinguished. For repeated heating pulses a switch-on time for the atomic flux of 200ms is readily attainable. This technique is suited to ultracold atom experiments using simple ultrahigh vacuum (UHV) chambers. Laser-induced heating provides a fast repetition of the experimental cycle, which, combined with low atom loss due to background gas collisions, is particularly useful for experiments involving far-off resonance optical traps, where sufficient laser power (0.5–4W) is readily available.