yang_2018#

L. Yang, Y. Li, and H. Wei, Sci. Rep. 8, 16447 (2018)

Source record · Catalogue · Review register

Source kind: measurement

Recorded technique: Absolute group-refractivity measurement by comb-mode-resolved spectral interferometry: an Er fibre frequency comb (250 MHz, filtered to 5 GHz mode spacing by a fibre Fabry-Perot cavity, centre 1530.8 nm, 37.5 nm bandwidth) through a Jamin interferometer with a 396.000 mm double-spaced vacuum cell; the comb modes resolved by a VIPA and grating spectrometer on an InGaAs camera; the group refractivity N - 1 from the FFT of the spectral interferogram (Eq. (6)), one measurement in 10 ms (pp. 2-4).

Materials in structured entries: None recorded.

Dataset quantities: None recorded.

Contents: 0 datasets; 0 formulas.

Curation notes#

No datasets: the only gas measured is ambient laboratory air (skipped: not a curated species), a 10-hour record of its group refractive index compared with Ciddor’s equation, shown in figures only (Figs. 3, 4). The stated combined standard uncertainty is (N - 1) x 4.7 x 10^-6, 1.3 x 10^-9 for air, dominated by the cell length (p. 7). The conclusion (p. 7) proposes measurements of N2, He and CO2 in future work; none are reported.

Recorded bibliographic identity status: VALIDATED. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets#

No datasets are recorded.

Formulas#

No formulas are recorded.

Corrections#

No dataset errata are recorded in this source record.

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the review register for the checks and decisions.