Publication detail

Measurement of the Hydrogen Cyanide Absorption Lines' Centers with the Potential for Mise en Pratique

HOŠEK, M. ŘEŘUCHA, Š. HRABINA, J. ČÍŽEK, M. ČÍP, O.

English title

Measurement of the Hydrogen Cyanide Absorption Lines' Centers with the Potential for Mise en Pratique

Type

conference paper

Language

en

Original abstract

We built a linear absorption spectroscopy setup to measure hydrogen cyanide ((HCN)-C-13-N-14) 2 nu(3) rotational-vibrational band. The laser's frequency was locked to the minimum of the absorption line by using the 1f technique. We used a commercially available lock-in amplifier combined with a custom-made PID controller allowing for the short-term frequency stability of about 10(-10). The laser frequency was determined by measuring the beat-note between the laser and the optical frequency comb. The laser was locked to each absorption line for about 8 hours and the final time record allowed us to determine the absorption line central frequency with the uncertainty of about 40 kHz. This shows significant improvement compared to the data already available for HCN. Our work can potentially lead to the acceptance of HCN for Mise en Pratique (MeP), which means that laser locked to one of the HCN lines can become the official source of the one-meter unit.

English abstract

We built a linear absorption spectroscopy setup to measure hydrogen cyanide ((HCN)-C-13-N-14) 2 nu(3) rotational-vibrational band. The laser's frequency was locked to the minimum of the absorption line by using the 1f technique. We used a commercially available lock-in amplifier combined with a custom-made PID controller allowing for the short-term frequency stability of about 10(-10). The laser frequency was determined by measuring the beat-note between the laser and the optical frequency comb. The laser was locked to each absorption line for about 8 hours and the final time record allowed us to determine the absorption line central frequency with the uncertainty of about 40 kHz. This shows significant improvement compared to the data already available for HCN. Our work can potentially lead to the acceptance of HCN for Mise en Pratique (MeP), which means that laser locked to one of the HCN lines can become the official source of the one-meter unit.

Keywords in English

hydrogen cyanide; linear absorption spectroscopy; optical frequency comb; frequency reference; frequency stabilized lasers; SI meter

Released

18.11.2021

Publisher

IEEE

Location

NEW YORK

ISBN

978-1-6654-3935-0

Book

2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)

Pages count

3

BIBTEX


@inproceedings{BUT180821,
  author="Martin {Hošek} and Šimon {Řeřucha} and Jan {Hrabina} and Martin {Čížek} and Ondřej {Číp},
  title="Measurement of the Hydrogen Cyanide Absorption Lines' Centers with the Potential for Mise en Pratique",
  booktitle="2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)",
  year="2021",
  month="November",
  publisher="IEEE",
  address="NEW YORK",
  isbn="978-1-6654-3935-0"
}