Accurate frequency measurements in the infrared using stabilized CO2/OsO4 lasers

被引：2

作者：

Acef, O ^{[1
]}

机构：

[1] Observ Paris, BNM, LPTF, F-75014 Paris, France

来源：

1998 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS DIGEST | 1998年

关键词：

D O I：

10.1109/CPEM.1998.699974

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new calibration of an OsO4 absolute frequency grid is reported with an uncertainty less than 100 Hz in the 28/29 THz range (delta nu/nu similar to 3 x 10(-12)). A precedent determination has been performed fifteen years before, with uncertainties ranging from 50 Hz to 2 kHz. These OsO4 transitions confer high metrological performances to CO2 lasers when frequency locked on the third harmonic of the saturated resonances. We report also recent results on the stability of the BNM-LPTF CO2/OsO4 optical frequency standard in term of short-term stability of 3 x 10(-14) tau(-1/2) and long term stability of 2.4 x 10(-15) for 3 000 s of integration time. This result corresponds, to our knowledge, to the best stability achieved, up to now, in the optical domain.

引用

页码：404 / 405

页数：2