Diode laser spectrometer for high-precision measurements

The issues of the development, calibration and putting into operation of a diode laser spectrometer for high-precision measurements are considered. The tests rely on the use of an isolated P20 line of the 00031 - 00001 band of the 12C16O2 molecule. The spectrometer error budget is analysed. A softwa...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 49; no. 7; pp. 613 - 622
Main Authors Nadezhdinskii, A.I., Ponurovskii, Ya.Ya
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.07.2019
IOP Publishing
Subjects
Approximation
CALIBRATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Contours
diode laser
Error analysis
ERRORS
LASER SPECTROSCOPY
LASERS
Line spectra
Mathematical analysis
Semiconductor lasers
Shape
spectral line intensity
SPECTROMETERS
spectroscopy
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Summary:The issues of the development, calibration and putting into operation of a diode laser spectrometer for high-precision measurements are considered. The tests rely on the use of an isolated P20 line of the 00031 - 00001 band of the 12C16O2 molecule. The spectrometer error budget is analysed. A software programme for the approximation of a spectral line contour is designed and the procedure is analysed. It is shown that, for a baseline with a relative level of 2.3 × 10−5, it is optimal to use no more than six fitting parameters in the line contour approximation. The measured integral intensity of the analytical line constitutes 5.3865(85) × 10−23 cm per molecule.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16776