Journal
OPTICS LETTERS
Volume 30, Issue 18, Pages 2351-2353Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.30.002351
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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 mm(3), containing (87)Rb 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, m(F) = 0 -> F = 2, m(F) = 0 hyperfine frequency of atoms in these cells is below 5 x 10(-11)/day.
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