Knappe S, Gerginov V, Schwindt P D D, Shah V, Robinson H G, Hollberg L, Kitching J
Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 8030, USA.
Opt Lett. 2005 Sep 15;30(18):2351-3. doi: 10.1364/ol.30.002351.
A novel technique for microfabricating alkali atom vapor cells is described in which alkali atoms are evaporated into a micromachined cell cavity through a glass nozzle. A cell of interior volume 1 mm3, containing 87Rb and a buffer gas, was made in this way and integrated into an atomic clock based on coherent population trapping. A fractional frequency instability of 6 x 10(-12) at 1000 s of integration was measured. The long-term drift of the F=1, mF=0-->F=2, mF=0 hyperfine frequency of atoms in these cells is below 5 x 10(-11)/day.
描述了一种用于微制造碱金属原子蒸汽室的新技术，其中碱金属原子通过玻璃喷嘴蒸发到微机械加工的室腔中。以这种方式制造了一个内部体积为1立方毫米、包含87Rb和缓冲气体的蒸汽室，并将其集成到基于相干布居捕获的原子钟中。在1000秒积分时测量到分数频率不稳定度为6×10^(-12)。这些蒸汽室中原子的F=1，mF=0→F=2，mF=0超精细频率的长期漂移低于5×10^(-11)/天。
