Abstract
Investigation results of effective population of states of 5d-configuration of Ce 3+ ions by energy transfer from Pr 3+ ions in LiY 0.3 Lu 0.7 F 4 (LYLF) crystals are discussed. The real concentrations of Pr 3+ and Ce 3+ ions in LYLF crystals are determined. Such parameters as excited 4f-5d state photoionization cross-section of Pr 3+ ions, ground state cross-section of Ce 3+ ions at 266 nm wavelengths and energy transfer coefficients of energy transfer from Pr 3+ to Ce 3+ ions were estimated. The results of pump-probe experiments on 5d-4f transitions of Ce 3+ ions in LYLF crystals are presented. The optimal parameters for getting maximal gain on 5d-4f transitions of Ce 3+ ions were determined by mathematical modeling.
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