Recent advances in the development of scheelite-like - MT_(1-x)Ln_x(WO_4)_2 - lasers

摘要

Tetragonal NaT(WO_4)_2, T= trivalent Y, La, Gd and Lu, single crystals doped with Yb~(3+) or Tm~(3+) have shown efficient room temperature laser operation at λ≈1.05 μm and λ≈1.95 μm, respectively. The broad bandwidth of the optical transitions of these lanthanides is of particular interest for diode-laser-pumped tunable and mode-locked femtosecond lasers. The present knowledge about these crystals and their applications as solid state lasers is overviewed. Results of new material preparation directions to produce epilayers and nano-, micro-particles of these compounds are described.