Absolute frequencies of H13C14N hydrogen cyanide transitions in the 1.5-µm region with the saturated spectroscopy and a sub-kHz scanning laser

0564702 - ÚPT 2023 RIV US eng J - Journal Article
Hrabina, Jan - Hošek, Martin - Řeřucha, Šimon - Čížek, Martin - Pilát, Zdeněk - Zucco, M. - Lazar, Josef - Číp, Ondřej
Absolute frequencies of H13C14N hydrogen cyanide transitions in the 1.5-µm region with the saturated spectroscopy and a sub-kHz scanning laser.
Optics Letters. Roč. 47, č. 21 (2022), s. 5704-5707. ISSN 0146-9592. E-ISSN 1539-4794
R&D Projects: GA MŠMT(CZ) EF16_026/0008460; GA MŠMT ED0017/01/01; GA MŠMT(CZ) LO1212
EU Projects: European Commission(XE) 17IND03 - LaVa
Institutional support: RVO:68081731
Keywords : laser spectroscopy * saturated absorption spectroscopy * laser standard * frequency stability
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.6, year: 2022
Method of publishing: Open access
https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-21-5704&id=513174

The wide span and high density of lines in its rovibrational spectrum render hydrogen cyanide a useful spectroscopic media for referencing absolute frequencies of lasers in optical communication and dimensional metrology. We determined, for the first time to the best of our knowledge, the molecular transitions’ center frequencies of the H13C14N isotope in the range from 1526 nm to 1566 nm with 1.3 × 10−10 fractional uncertainty. We investigated the molecular transitions with a highly coherent and widely tunable scanning laser that was precisely referenced to a hydrogen maser through an optical frequency comb. We demonstrated an approach to stabilize the operational conditions needed to maintain the constantly low pressure of the hydrogen cyanide to carry out the saturated spectroscopy with the third-harmonic synchronous demodulation. We demonstrated approximately a forty-fold improvement in the line centers’ resolution compared to the previous result.
Permanent Link: https://hdl.handle.net/11104/0336341