کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5427025 | 1508614 | 2017 | 5 صفحه PDF | دانلود رایگان |
- We measured unperturbed frequency of Doppler-broadenedmolecular transition in O2 B band with relative uncertainty of 2Ã10â11. We obtained absolute transition frequency with uncertainty typical for Doppler-free techniques.
- Spectra were measured with optical frequency comb (OFC) assisted, Pound-Drever-Hall (PDH) locked, frequency stabilized cavity ring-down spectrometer (FS-CRDS) linked to the optical atomic clock.
- We present proof-of-principle experiment introducing the use of optical atomic clocks as a frequency reference in molecular spectroscopy.
- We show that the use of optical atomic clock as a frequency reference together with self-referenced optical frequency comb can improve spectrum frequency axis even though the comb is not locked to the clock.
We measured absolute frequency of the unperturbed P7 P7 O2 B-band transition ν0=â¯434783.5084857(82)â¯GHz and the collisional self-shift coefficient δ=â9.381(62)Ã10â21â¯GHz/(molecule/cm3). With Doppler-limited spectroscopy we achieved the relative standard uncertainty of 2Ã10â11 on line position, typical for Doppler-free techniques. Shapes of the spectral line were measured with a Pound-Drever-Hall-locked frequency-stabilized cavity ring-down spectrometer referenced to an 88Sr optical atomic clock via an optical frequency comb.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 201, November 2017, Pages 156-160