Spectroscopic characteristics of Sm3+-doped alkali fluorophosphate glasses.

摘要: Abstract Optical absorption, luminescence and lifetime measurements of Sm 3+ -doped alkali fluorophosphate glasses with molar compositions 50(NaPO 3 ) 6  + 10TeO 2  + 20AlF  + 19 R F + 1Sm O (  = Li, Na K) are described. The variation optical properties glass composition plays a dominant role in the determination efficient laser materials. From experimental oscillator strengths f – electric dipole transitions, phenomenological Judd–Ofelt parameters have been evaluated used to evaluate radiative such as transition probabilities A ), branching ratios β lifetimes τ integrated absorption cross-section σ for various excited levels. predicted values from 4 G 5/2 level its lower levels compared experimentally measured values. Stimulated emission cross-sections e were also determined  →  H J  = 5/2, 7/2, 9/2 11/2) transitions. transitions these tellurofluorophosphate certain potential identified.