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Yb: YAG is an important diode pumped laser crystal. It is more suitable for diode pumping than traditional Nd doped laser materials. Compared with the commonly used Nd: YAG crystal, Yb: YAG crystal has a wide diode pumping absorption band, which can effectively reduce the thermal management requirements of laser diodes. At the same time, Yb ion laser has long upper level fluorescence lifetime, no excited state absorption and energy up conversion, low radiation heat loss, and the heat load generated by unit pump power is 3 ~ 4 times lower than that of Nd: YAG crystal. It is an excellent crystal for high average power solid-state lasers.
■ Advantages of Yb: YAG Crystal:
High slope efficiency
High optical quality
High thermal conductivity and high mechanical strength
Non excited state absorption and upconversion
The heat load produced by unit pump power is lower than that of Nd: YAG crystal
Diode pumped absorption bandwidth about 8nm@940nm
It is suitable for common high-power InGaAs laser diode (wavelength 940nm or 970nm) pumping
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