Luminescence and stimulated emission from BaGd2–xNdx(MoO4)4 single crystals
The Stark structure of the 4F3/2, 4I11/2, and 4I9/2 levels of Nd3+ was determined for BaGd2–xNdx(MoO4)4 crystals. An investigation was made of concentration quenching of Nd3+ luminescence, which was found to be due to a cross relaxation mechanism. Ofelt parameters were estimated and molar absorption in the possible pumping range of Nd3+ was measured. The effective stimulated emission cross section was measured for the highest-intensity component of the 4F3/2→4I11/2 transition (λ = 1061 nm). For x = 0.15, stimulated emission was obtained from a flashlamp-pumped single crystal sample 1.2 mm thick.