High Pressure effect on fluorescence lifetime τ for magnetic dipole ⁵D₀→⁵F₁ transitions in YAG:Eu³⁺

ABSTRACT

The fluorescence lifetime for magnetic dipole ⁵D₀→⁷F₁ transition in yttrium aluminum garnet doped with Eu³⁺ (YAG:Eu³⁺) crystal was studied under the pressure of up to 10.4 GPa at room temperature. The fluorescence lifetime τ (⁵D₀→⁷F₁ transition) slowly decreased with pressure. The pressure effect on τ (⁵D₀→⁷F₁ transition) was explained with a model which considered pressure effect on line position: inter-ionic distance, ion volume, molecular volume, ion polarizability, molecular polarizability, sample refractive index, and surrounding hydrostatic medium refractive index. The fluorescence lifetime τ calculated by the presented model was in close correspondence with the experimental values.

KEYWORDS:

• High pressure
• optical properties
• fluorescence lifetime
• YAG:Eu³⁺
• glass ceramics
• rare earth

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije [Grant number 174031].