Spectroscopic properties and continuous-wave laser operation of Nd:Ca 0.7 La 0.3 Mg 0.3 Al 11.7 O 19 crystal
Résumé
The polarized absorption spectra, polarized fluorescence spectra and fluorescence decay curve of Nd:Ca0.7La0.3Mg0.3Al11.7O19 (CLnA) crystal were recorded at room temperature. The Judd-Ofelt parameters Ω2, Ω4 and Ω6 were calculated to be 0.80×10−20 cm2, 3.83×10−20 cm2 and 2.71×10−20 cm2, respectively. The spontaneous transition rates, branching ratios and the radiative lifetime were calculated for the 4F3/2 excited state. The emission cross section is 4.01×10−20 cm2 at 1052 nm for σ-polarization and 0.96×10−20 cm2 at 1052 nm for π-polarization, respectively. Continuous-wave (CW) laser operations of a-cut and c-cut Nd:Ca0.7La0.3Mg0.3Al11.7O19 crystals have been demonstrated.
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