Er3+/Yb3+Co-doped Yttrium Aluminum Borate (Er:Yb:YAl3(BO3)4, Er:Yb:YAB) crystal has been considered as an excellent 1.55 µm laser material, because it has high thermal conductivity, high Er3+/Yb3+ energy transfer efficiency and weak upconversion loss. Compared with Er3+/Yb3+ co-doped phosphato glass, Er:Yb:YAl3(BO3)4 crystal can achieve 1530 nm continuous laser output with high (maximum) power and high slope efficiency. Due to the strong penetration ability to smoke, excellent transparency in atmosphere and high sensitivity for the room-temperature Ge as well as InGaAs photodiodes, eye-safe 1.55 µm laser can be widely used in many applications, such as LiDAR laser ranging, three-dimensional imaging and target recognition.

Features:

Uniaxial crystal with trigonal structure

High thermal conductivity

Wide absorption bandwidth near 976 nm

High absorption and emission cross-sections

Extremely high Yb3+ to Er3+ energy transfer efficiency

Applications:

High power eye-safe (~1.55μm) CW lasers for metrology

High-repetition rate passively Q-switched lasers for LIDAR and LIBS systems

Ultrashort mode-locked lasers for telecom systems