Performance of a 967 nm CW diode end-pumped Er:GSGG laser at 2.79   Micrometer
  We demonstrated a 967 nm diode end-pumped Er:GSGG laser operated at 2.794 Micrometer with spectrum width 3.6 nm in the continuous wave(CW) mode. The maximum output power of 440 mW is obtained at an incident pumping power of 3.4 W, which corresponds to an optical-to-optical efficiency of 13% and slope efficiency of 13.2%. The results suggest that short cavity and efficient cooling setup for crystal are advantageous to improve laser performance. 
Z. H. Wu, D. L. Sun, S. Z. Wang, J. Q. Luo, X. L. Li, L. Huang, A. L.   Hu, Y. Q. Tang, Q. Guo
physics.optics