Up-conversion properties of Yb,Tb:YAG single crystals grown by the micro-pulling-down method - Archive ouverte HAL Access content directly
Journal Articles Journal of Luminescence Year : 2022

Up-conversion properties of Yb,Tb:YAG single crystals grown by the micro-pulling-down method

Jian Liu
  • Function : Author
Qingsong Song
  • Function : Author
Jie Xu
  • Function : Author
Na Li
Peng Liu
Xiaodong Xu
  • Function : Correspondent author
  • PersonId : 1083452

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Jun Xu
  • Function : Correspondent author
  • PersonId : 1129331

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Abstract

Yb,Tb:YAG crystals with various Yb 3+ and Tb 3+ concentration were grown by the micro-pulling-down technique (µ-PD). The absorption spectra, fluorescence spectra and fluorescence decay curves of Yb,Tb:YAG crystals were measured at room temperature. Under 980 nm excitation, Yb,Tb:YAG crystals exhibited intense visible up-conversion luminescence due to the cooperative energy transfer from two Yb 3+ ions to one Tb 3+ ion. Under 4850 nm excitation, Yb,Tb:YAG crystals yielded near-infrared down-conversion emission, ascribing to the cooperative absorption of pumping photons and cooperative energy transfer from one Tb 3+ ion to two Yb 3+ ions. The energy transfer processes from Yb 3+ ions to Tb 3+ ions were discussed, and the energy transfer efficiency was calculated. The results show that Yb,Tb:YAG crystal is promising for visible laser output when pumped by InGaAs laser diode (LD).
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Dates and versions

hal-03687027 , version 1 (10-06-2022)

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Jian Liu, Qingsong Song, Jie Xu, Jun Guo, Yuxin Pan, et al.. Up-conversion properties of Yb,Tb:YAG single crystals grown by the micro-pulling-down method. Journal of Luminescence, 2022, 246, pp.118826. ⟨10.1016/j.jlumin.2022.118826⟩. ⟨hal-03687027⟩
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