High pressure optical studies of LMA:Mn2+, Nd3+ and LMA:Mn2

• Published in: Optical materials Vol. 30; no. 7; pp. 1070 - 1073
• Main Authors: Jovanić, B.R., Viana, B., Dramićanin, M., Panić, B.M., Radenković, B.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2008; Elsevier Science
• Subjects: Condensed matter: structure, mechanical and thermal properties; Energy transfer; Exact sciences and technology; Fundamental areas of phenomenology (including applications); High pressure; High-pressure and shock-wave effects in solids and liquids; Luminescence; Mechanical and acoustical properties of condensed matter; Metal transition; Optical materials; Optics; Physics; Rare-earth ions; Rare-earth ions; 62.50; Energy transfer; Luminescence; Metal transition; High pressure; Pressure effects; Doped materials; Excitation energy transfer; Manganese additions; Radiative lifetimes; Neodymium additions; Optical properties; Rare earth additions; Optical materials; Quaternary compounds; Codoping
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2007.05.012

This study considers effects of pressure of up to 110kbar on line position and fluorescence lifetime τ for 4T1→6A1 transition in LMA:Mn2+ and LMA:Mn2+, Nd3+. Energy transfer between Mn2+and Nd3+ in LMA:Mn2+, Nd3+ has also been considered. Results indicate pressure induced line shift towards longer wavelengths, a red-shift in both crystals with the same rate of 0.182nmkbar−1. Pressure influences fluorescence lifetime τ in the considered crystals differently; whereas for LMA:Mn2+ increasing pressure causes slow linear decrease of τ, and for LMA:Mn2+, Nd3+τ increases linearly as pressure raises. Energy transfer efficiencies decrease with pressure. High pressure induced red-shift can be explained by a simple model.