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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 18 — Sep. 15, 2005
  • pp: 2351–2353

Atomic vapor cells for chip-scale atomic clocks with improved long-term frequency stability

S. Knappe, V. Gerginov, P. D. D. Schwindt, V. Shah, H. G. Robinson, L. Hollberg, and J. Kitching  »View Author Affiliations


Optics Letters, Vol. 30, Issue 18, pp. 2351-2353 (2005)
http://dx.doi.org/10.1364/OL.30.002351


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Abstract

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 ^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 6×10^−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 5×10^−11/day.

© 2005 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(220.4000) Optical design and fabrication : Microstructure fabrication

Citation
S. Knappe, V. Gerginov, P. D. D. Schwindt, V. Shah, H. G. Robinson, L. Hollberg, and J. Kitching, "Atomic vapor cells for chip-scale atomic clocks with improved long-term frequency stability," Opt. Lett. 30, 2351-2353 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-18-2351

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