Abstract
Photoluminescence related to the 3P 0→ 3H 4 and 1D 2→ 3H 4 transitions of Pr 3+ in YAG is measured in the pressure range from ambient to 290 kbar. The Γ 1→ Γ 3 and Γ 1→ Γ 4 transitions show different dependencies on pressure. All pressure shifts are negative and are smaller for the lines of lower energies for the emission from the 3P 0 and 1D 2 states, that were attributed to the Γ 3 and Γ 4 energy crossover in the ground state. To reproduce the energetic structure of the Pr 3+:YAG system and dependencies of the emission energy on pressure we have used the crystal field model and considered separately isotropic compression of the Pr 3+-ligand system and a non-isotropic effect described by changes of the Pr-O bond angles. The main conclusion of our investigation is that, contrary to expectation, the effect of the hydrostatic pressure is not isotropic; it changes the local bond angles of the ion–ligands system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
