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

Laser-induced fluorescence (LIF) in 400–1000 nm wavelength range was studied using narrow-band laser radiation with the wavelength of 456 nm, resonating with 6S1/2→7P3/2 transition of Cs atoms. A T-shaped cell made entirely of technical sapphire, L = 1 cm in length, containing cesium vapors and capable of operating successfully at temperatures up to 450°C, was used. By recording the LIF signal, one can, estimate the amount of residual Rb vapor. The cesium-based cell can serve as an effective optical filter-converter, converting blue radiation to red one.

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