We have experimentally demonstrated a highly efficient diode-pumped Tm:YAG ceramic laser operating at 2 μm wavelength. The maximum output power of 6.05 W was realized with a slope efficiency as high as 65%. As far as we know, it is the highest slope efficiency reported for Tm:YAG ceramic laser. The wavelength tuning experiment of Tm:YAG ceramic laser was carried out and the results suggest that Tm:YAG ceramic laser could operate simultaneously at multiple wavelengths in a wide range of 1884–2017 nm.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: November 14, 2011
Revised Manuscript: January 20, 2012
Manuscript Accepted: January 21, 2012
Published: March 14, 2012
W. L. Gao, J. Ma, G. Q. Xie, J. Zhang, D. W. Luo, H. Yang, D. Y. Tang, J. Ma, P. Yuan, and L. J. Qian, "Highly efficient 2 μm Tm:YAG ceramic laser," Opt. Lett. 37, 1076-1078 (2012)