Luminescence kinetics of LiNbO3:Yb3+-Er3+, LiNbO3:Er3+, and LiNbO3:Yb3+ crystals under selective excitations in the impurity subsystem
Tóm tắt
The results of investigations of luminescent radiations’ kinetic characteristics for LiNbO3:Yb3+-Er3+, LiNbO3:Er3+, and LiNbO3:Yb3+ crystals under optical excitations at 532 nm and 1064 nm wavelengths are presented. The shapes and times of rise and damping of luminescent signals at 550 nm, 980 nm and 1555 nm wavelengths under selective excitations in the impurity subsystem of the investigated materials are determined. Comparison of the temporal characteristics of luminescent responses of LiNbO3 crystals doped separately with Yb3+ and Er3+ ions with those of the LiNbO3:Yb3+-Er3+ crystal allows identifying the contributions from different energy transfer processes of optical excitation taking place in the impurity subsystem of the material.
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