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12 December 2022 High-precision measurement of the center frequencies of the hydrogen cyanide (HCN) hyperfine transitions in the 1.5 μm wavelength band
Martin Hošek, Šimon Řeřucha, Jan Hrabina, Martin Čížek, Lenka Pravdová, Ondřej Číp
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Proceedings Volume 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 1250213 (2022) https://doi.org/10.1117/12.2664209
Event: 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2022, Wojanow, Poland
Abstract
The definition of both meter and second relies on precisely measured frequency. The convenient sources of such frequencies are lasers stabilized by molecular vapours. The He-Ne lasers stabilized by iodine vapours represent the cornerstone sources in the visible spectrum. On the other hand, the infrared spectrum (particularly 1550 nm C-band) is of metrological interest thanks to its cost-effective, readily available components. The widely used absorption media at 1550nm has been two acetylene isotopes (12C2H2, 13C2H2), while H13C14N represents an alternative covering a broader spectrum well corresponding to the telecommunication C-band.
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Martin Hošek, Šimon Řeřucha, Jan Hrabina, Martin Čížek, Lenka Pravdová, and Ondřej Číp "High-precision measurement of the center frequencies of the hydrogen cyanide (HCN) hyperfine transitions in the 1.5 μm wavelength band", Proc. SPIE 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1250213 (12 December 2022); https://doi.org/10.1117/12.2664209
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KEYWORDS
Absorption
Frequency combs
Hydrogen
Absorption spectroscopy
Cyanide
Modulation
Spectroscopy
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