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System for calibration of the frequency stabilized He-Ne laser

Pieńkowski J., Rzepka J., Sambor S.

Optica Applicata

2002

Vol. 32, nr 1-2

75-84

The frequency stabilized He-Ne lasers are applied as length standard in interferometers used for high-precision measurement of distances and displacements. This paper presents the calibration equipment applied for the definition of real value of the laser radiation wavelength and investigation of stability and reproducibility of the wavelength of the laser radiation in the He-Ne laser interferometers. The laser radiation frequency was measured with the heterodyne method with the help of the developed laser frequency iodine standard 633 nm. The system was used for calibration of the frequency of the He-Ne Zeeman laser used in the two frequency laser interferometer.