Tm,Ho:YAG Crystal Laser Output Power: A Review of Current Achievements

Since then, there have been no reports of Tm,Ho:YAG crystals producing an output power of over 10W. However, in 2014, Zhang Chao et.al utilized two side-pumped laser modules with Tm:YAG and Tm,Ho:YAG in the same cavity, which resulted in a continuous wave output power of 37W at 2.1μm [14]. This is currently the highest output power achieved with co-doped Tm,Ho:YAG at 2.09μm. Unfortunately, the optical-to-optical efficiency for this system is only 3.1% due to a large loss mechanism.