Laser-Induced Fluorescence in Cesium Atomic Vapors Caused by 456-nm Radiation

Abstract

Laser-induced fluorescence (LIF) in the wavelength range 400–1000 nm was studied using narrow-band laser radiation with a wavelength of 456 nm, resonating with the 6S_1/2 → 7P_3/2 transition of Cs atoms. A T-shaped cell made entirely of technical sapphire with length L = 1 cm, containing cesium atomic vapors, and capable of operating successfully at temperatures up to 450°C was used. The amount of residual Rb atomic vapors could be estimated by recording the LIF signal. The Cs-based cell could serve as an effective optical filter-converter of blue into red radiation.