88 citations · 167 across the 4 of their papers we have counts for
4 papers
Accurate determination of the Boltzmann constant by Doppler spectroscopy: Towards a new definition of the kelvin
Benoît Darquié, Sinda Mejri, Papa Lat Tabara Sow +6
Accurate molecular spectroscopy in the mid-infrared region allows precision measurements of fundamental constants. For instance, measuring the linewidth of an isolated Doppler-broa…
Measuring the Boltzmann constant by mid-infrared laser spectroscopy of ammonia
S. Mejri, Papa Sow, O. Kozlova +7
We report on our ongoing effort to measure the Boltzmann constant, using the Doppler broadening technique on ammonia. This paper presents some of the improvements made to th…
A widely tunable 10-m quantum cascade laser phase-locked to a state-of-the-art mid-infrared reference for precision molecular spectroscopy
Papa Lat Tabara Sow, Sinda Mejri, Sean K. Tokunaga +7
We report the coherent phase-locking of a quantum cascade laser (QCL) at 10-m to the secondary frequency standard of this spectral region, a CO2 laser stabilized on a saturated…
A neutral atom frequency reference in the deep UV with 10^(-15) range uncertainty
J. J. McFerran, L. Yi, S. Mejri +5
We present an assessment of the (6s^{2})1S0 -> (6s7s)3P0 clock transition frequency in 199Hg with an uncertainty reduction of nearly three orders of magnitude and demonstrate an at…