First-Class State Working Standard of Units of Wavelength in the Range from 1.25 to 20.00 μm and of Wavenumber in the Range from 500 to 8000 cm–1

The first-class State Working Standard of units of wavelength in the range from 1.25 to 20.00 μm and of units of wavenumber in the range from 500 to 8000 cm–1 developed at the All-Russia Research Institute of Optophysical Measurements on the basis of an infrared Fourier spectrometer is presented. The units of wavelength and units of wavenumber are transmitted to working standards in the course of a measurement (performed by an infrared Fourier spectrometer) of the positions of the radiation peaks from two laser sources incorporated into GET 170-2011, the State Primary Special Standard of the units of length and propagation time of a signal in an optical cable, mean power, attenuation, and wavelength for fiber-optic communication systems and information transmission systems. The working standard reproduces the spectral scale with the use of an interference pattern produced by a built-in He–Ne laser in the course of measurements of the spectral distribution of the strength of the internal source. Propagation of the wavelength scale in the range 1.25–20.00 μm and of the wavenumber scale in the range 500–8000 cm–1 is achieved through the introduction of corresponding correction factors to the results of measurements. An accuracy chart that establishes the traceability of an instrument used to measure wavelength and wavenumber to GET 170–2011 is developed and presented.

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Correspondence to A. Yu. Dunaev.

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Translated from Izmeritel’naya Tekhnika, No. 10, pp. 3–8, October, 2020.

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Dunaev, A.Y., Bormashov, V.S., Morozova, S.P. et al. First-Class State Working Standard of Units of Wavelength in the Range from 1.25 to 20.00 μm and of Wavenumber in the Range from 500 to 8000 cm–1. Meas Tech (2021). https://doi.org/10.1007/s11018-021-01853-0

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Keywords

  • wavelength
  • wavenumber
  • first-class working standard
  • infrared Fourier spectrometer