Coherent population trapping resonances in Cs-Ne vapor microcells for miniature clocks applications

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3530951· OSTI ID:21538040

Boudot, R; Dziuban, P; Hasegawa, M; Chutani, R K; Galliou, S; Giordano, V; Gorecki, C ^[1]

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1. FEMTO-ST Institute, UMR 6174 CNRS, ENSMM, 32 av. de l'Observatoire, 25044 Besancon Cedex (France)

We report the characterization of dark line resonances observed in Cs vapor microcells filled with a unique neon (Ne) buffer gas. The impact on the coherent population trapping (CPT) resonance of some critical external parameters such as laser intensity, cell temperature, and microwave power is studied. We show the suppression of the first-order light shift by proper choice of the microwave power. The temperature dependence of the Cs ground state hyperfine resonance frequency is shown to be canceled in the 77-80 deg. C range for various Ne buffer gas pressures. The necessity to adjust the Ne buffer gas pressure or the cell dimensions to optimize the CPT signal height at the frequency inversion temperature is pointed out. Based on such Cs-Ne microcells, we preliminary demonstrate a 852 nm vertical cavity surface emitted laser (VCSEL)-modulated based CPT atomic clock exhibiting a short term fractional frequency instability {sigma}{sub y}({tau})=1.5x10{sup -10{tau}-1/2} until 30 s. These results, similar to those published in the literature by others groups, prove the potential of our original microcell technology in view of the development of high-performance chip scale atomic clocks.

• OSTI ID: 21538040
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 1; Other Information: DOI: 10.1063/1.3530951; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC CLOCKS
ATOMS
BUFFERS
CAVITIES
CESIUM
COOLING
INHIBITION
INSTABILITY
LATTICE PARAMETERS
MICROWAVE RADIATION
NEON
PHOTON-ATOM COLLISIONS
RESONANCE
SURFACES
TEMPERATURE DEPENDENCE
TEMPERATURE INVERSIONS
TRAPPING
VAPORS
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
METALS
NONMETALS
PHOTON COLLISIONS
RADIATIONS
RARE GASES