Laser action in LaAlO3:Nd3+ single crystal

The spectral and laser properties of Nd3+ doped (1wt%) LaAlO3 single crystal are presented. The energy levels of the Nd3+ ion in the LaAlO3 matrix were assigned. The Judd–Ofelt parameters Ω2=1.346, Ω4=4.490, and Ω6=5.168 (all ×10−20cm−2) were evaluated. The absorption σabs and emission σemi cross sections at the respective pumping and emission wavelengths were calculated to be σabs(789.7nm)=2.42×10−20cm2, σemi(909nm)=5.02×10−20cm2, and σemi(1080nm)=7.03×10−20cm2. Continuous-wave laser action at 1080nm in LaAlO3:Nd3+ was obtained.