Efficient laser emission in Ho3+:LiLuF4 grown by micro-Pulling Down method.

@article{Veronesi2012EfficientLE,
  title={Efficient laser emission in Ho3+:LiLuF4 grown by micro-Pulling Down method.},
  author={Stefano Veronesi and Yongzhuan Zhang and Mauro Tonelli and Martin Schellhorn},
  journal={Optics express},
  year={2012},
  volume={20 17},
  pages={18723-31}
}
We report a spectroscopic investigation and an efficient Ho:LiLuF4 laser in-band pumped at 1938 nm. This represents the first laser emission of a fluoride crystal grown by micro-Pulling Down method in the 2 μm wavelength range. The Ho:LiLuF4 laser yielded a maximum output power of 7.1W with a slope efficiency of 41% and a threshold around 5W, at lasing wavelength of 2054.2 nm.