Narrow linewidth CPT signal in small vapor cells for chip scale atomic clocks

Author

Zhu, M. ; Cutler, L.S. ; Berberian, J.E. ; DeNatale, J.F. ; Stupar, P.A. ; Tsai, C.

Author_Institution

Agilent Technol. Inc, Palo Alto, CA, USA

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

100

Lastpage

103

Abstract

We report our measurement of coherent-population-trapping (CPT) signal linewidths in small vapor cells, which are desirable for chip scale atomic clock (CSAC) applications. The linewidths are measured in both rubidium vapor cells and cesium vapor cells. Using a micro-machined silicon absorption cell (diameter = 1.7 mm, length = 2 mm), we demonstrate a sub-kHz linewidth (FWHM) of the clock transition in the ¹³³Cs atom (|F = 3, m_F = 0>/|F = 4, m_F = 0>). The measured intrinsic linewidths (FWHM = 777 Hz for Cs and FWHM = 1496 Hz for Rb) of the cells agree with the calculated results.

Keywords

atomic clocks; caesium; frequency standards; micromechanical devices; rubidium; silicon; spectral line breadth; 1.7 mm; 2 mm; Cs; Rb; Si; atomic frequency standards; cesium vapor cells; chip scale atomic clocks; coherent-population-trapping signal linewidths; micro-machined silicon absorption cell; narrow linewidth coherent-population-trapping signal; rubidium vapor cells; vapor cells; Atomic beams; Atomic clocks; Atomic measurements; Electromagnetic wave absorption; Gas lasers; Optical attenuators; Optical buffering; Resonance; Semiconductor device measurement; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International

ISSN

1075-6787

Print_ISBN

0-7803-8414-8

Type

conf

DOI

10.1109/FREQ.2004.1418435

Filename

1418435