Abstract
We have carried out a detailed spectroscopic characterization of Nd: GdVO4, a new laser crystal with high effective absorption and emission cross sections. The accidental degeneracy of the upper4 F 3/2 laser level decreases the number of emission lines and creates -together with the anisotropic crystal field - high emission cross sections (7.6 × 10−19 cm2 at 1.06 µm and 300 K). In addition, the lines are strongly homogeneously broadened (1.6 nm for the 808.4 nm diode-laser pump transition). The temperature dependences of lifetime, linewidths, and cross sections have been determined. Slope efficiencies up to 57% with respect to the absorbed diode-laser pump power and output powers up to 0.8 W have been achieved at 1.06 µm from a 2 mm long crystal. Intracavity second-harmonic generation, using a KTP crystal, is demonstrated.
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Jensen, T., Ostroumov, V.G., Meyn, J.P. et al. Spectroscopic characterization and laser performance of diode-laser-pumped Nd: GdVO4 . Appl. Phys. B 58, 373–379 (1994). https://doi.org/10.1007/BF01081876
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DOI: https://doi.org/10.1007/BF01081876