Abstract:Laser oscillation is obtained in caesium and rubidium atoms with wavelengths in the range of 2–5.5 μm under pumping to high-lying energy levels. Longitudinal resonant pumping is implemented using the second harmonic of radiation from an optical parametric oscillator. The pump wavelength is tuned over discrete levels from 8P to 10P in caesium atoms and from 6P to 8P in rubidium atoms. The width of the pump radiation spectrum is 12 cm-1. When caesium atoms are pumped, the pump pulse energy is no more than 10 mJ;… Show more
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