Optics and Photonics Society of Iran

Investigation of hyperfine and Zeeman atomic transitions of alkali metal vapors have found numerous applications in recent years. In these applications, there are some spectral broadening, such as Doppler broadening, which affect the accuracy of measurement of energy difference between two levels. One of the preferable ways for reduction of the Doppler broadening is usage of Buffer gas in the alkali meatal vapor cell. In this paper, the effect of Buffer gas on the reduction of Doppler broadening of D₁ atomic transition of natural rubidium has been investigated. Circularly and linearly polarized beam enters the rubidium celll containing Buffer gas and atomic transitions were studied in the earth magnetic field and also an applied magnetic field with a semi experimental way.