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CO2/OsO4 lasers as frequency standards in the 29 THz range

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1 Author(s)
Acef, O. ; Obs. de Paris, Meudon, France

The CO2 lasers, frequency stabilized on OsO4 transitions around 29 THz, are successfully used as secondary references for visible frequency synthesis and also for high-accuracy spectroscopy in the infrared domain. The BNM-LPTF CO2/OsO4 frequency standards exhibit high metrological performances: a long term reproducibility of ±10 Hz (1σ=2×10-13) and a stability σy=6.6×10-14/√τ with a Flicker plateau of 4×10-15 (Δν/ν=0.1) for 300 s to 103 s averaging times. These results and a preliminary study of the main effects which can induce frequency shifts are reported

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:46 ,  Issue: 2 )

Date of Publication:

Apr 1997

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