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Abstract
The absorption and emission of Nd3+: KLa (WO4)2 crystal were investigated. The uniaxial crystal Nd3+: KLa(WO4)2 shows strong polarization dependence. The intensity of the absorption bands in E//c is about four times than that in E//a. The absorption cross section σa is 22.6 × 10−20 cm2 for E//c. The emission cross section at 1.069 μm is 2.09 × 10−19 cm2. The fluorescence lifetime is 157 μs at 300 K. The relationship of Nd3+ concentrations with fluorescence intensity and lifetime was discussed. The results show the ca 3 at % Nd3+ concentration in Nd3+: KLa(WO4)2 crystal is appropriate.