Back to Search
Start Over
Spectral and luminescent properties of trivalent samarium ions in KLu(WO4)2 crystals
- Source :
- Materials Research Bulletin. 41:1695-1700
- Publication Year :
- 2006
- Publisher :
- Elsevier BV, 2006.
-
Abstract
- The crystals of Sm3+-doped KLu(WO4)2 with large dimensions up to 40 mm × 33 mm × 13 mm have been grown by the top-seeded solution growth (TSSG) method. The spectral and luminescent properties have been investigated. Based on the Judd–Ofelt theory, the following spectral parameters have been obtained: the phenomenological intensity parameters Ωt, Ω2 = 15.728 × 10−20 cm2, Ω4 = 4.223 × 10−20 cm2 and Ω6 = 2.839 × 10−20 cm2, radiative transition probabilities A J , J ′ and oscillator strengths P J , J ′ . The radiative lifetime of levels 4G5/2 is 748 μs. However, the measured emission lifetime is τem = 569 μs. The quantum efficiency is very low because of the excited state absorption. In addition, the values of integrated emission cross-sections are also calculated.
- Subjects :
- Materials science
Mechanical Engineering
chemistry.chemical_element
Crystal growth
Condensed Matter Physics
Ion
Samarium
chemistry
Mechanics of Materials
Excited state
Radiative transfer
General Materials Science
Quantum efficiency
Atomic physics
Luminescence
Absorption (electromagnetic radiation)
Subjects
Details
- ISSN :
- 00255408
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Materials Research Bulletin
- Accession number :
- edsair.doi...........853995b26378c13724a85a11cd938739