Absolute frequency metrology of the CHF3 8.6-µm ro-vibrational spectrum at 10−11 level
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Quantitative Spectroscopy and Radiative Transfer"
DOI: 10.1016/j.jqsrt.2020.106963
Abstract: Abstract An optical-frequency-comb-referenced quantum cascade laser is used to perform wavelength-modulation Lamb-dip spectroscopy on a large number of ro-vibrational transitions falling in the CHF3 υ 5 fundamental band at 8.6 µm. The combined (statistical + systematic) fractional uncertainty… read more here.
Keywords: absolute frequency; spectrum; spectroscopy; frequency metrology ... See more keywords
Applying clock comparison methods to pulsar timing observations
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab742
Abstract: Frequency metrology outperforms any other branch of metrology in accuracy (parts in 10−16) and small fluctuations ( read more here.
Keywords: pulsar timing; metrology; frequency metrology; applying clock ... See more keywords
Critical thermal drifts in external fiber amplifiers limit optical frequency metrology.
Sign Up to like & getrecommendations! Published in 2025 at "Optics letters"
DOI: 10.1364/ol.573411
Abstract: Relying on the nonlinear optical effect of difference-frequency generation, passively carrier-envelope stabilized comb systems are currently considered the simplest option for generating combs with zero carrier-envelope offset frequency ${f_{{\mathbf{ceo}}}}$, that is, without relying on electronic… read more here.
Keywords: metrology; frequency metrology; mathbf ceo; thermal drifts ... See more keywords