Interaction of Er{sup 3+} ions in Er-doped calcium - niobium - gallium garnet crystals

Journal Article · Tue Aug 03 04:00:00 EDT 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N05ABEH014302· OSTI ID:21471347

Malov, A V ^[1]; Popov, A V ^[2]; Ryabochkina, P A; Bol'shakov, E V

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1. N.P. Ogarev Mordovian State University, Saransk (Russian Federation)
2. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

The processes of nonradiative energy transfer in calcium - niobium - gallium garnet (CNGG) crystals doped with Er{sup 3+} ions are studied. It is found that the energy of erbium ions in the Er:CNGG crystal with the erbium atomic concentrations C{sub Er}=6% and 11% is transferred via the nonradiative co-operative processes {sup 4}I{sub 11/2{yields}} {sup 4}I{sub 15/2}, {sup 4}I{sub 11/2{yields}} {sup 4}F{sub 7/2}, {sup 4}I{sub 11/2{yields}} {sup 4}I{sub 15/2}, {sup 4}I{sub 13/2{yields}} {sup 4}F{sub 9/2}; and {sup 4}I{sub 13/2{yields}} {sup 4}I{sub 15/2}, {sup 4}I{sub 13/2{yields}} {sup 4}I{sub 9/2}, whose efficiency increases with increasing intensity of exciting radiation. It is shown that the cross-relaxation processes {sup 4}S{sub 3/2{yields}}{sup 4}I{sub 9/2}, {sup 4}I{sub 15/2{yields}}{sup 4}I{sub 13/2}, whose intensity depends on the concentration of Er{sup 3+} ions, are characteristic for Er:CNGG crystals with the Er atomic concentration above 1%. (active media)

• OSTI ID: 21471347
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 5 Vol. 40; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METALS
CALCIUM
CHARGED PARTICLES
CRYSTALS
DOPED MATERIALS
EFFICIENCY
ELEMENTS
ENERGY TRANSFER
ERBIUM
ERBIUM IONS
GALLIUM
GARNETS
IONS
MATERIALS
METALS
MINERALS
NIOBIUM
RARE EARTHS
REFRACTORY METALS
RELAXATION
SILICATE MINERALS
TRANSITION ELEMENTS