Yb: YAG
Category: Laser Crystals  Publish Time: 2018-09-12 22:41 

Yb: YAG


Yb:YAG is more suitable for diode-pumping than the traditional Nd-doped systems. It can be pumped at 0.94 μm laser output. Compared with the commonly used Nd:YAG crystal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-state lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.


Advantages:

•   Very low fractional heating, less than 11%
•   Very high slope efficiency
•   Broad absorption bands, about 8nm@940nm
•   No excited-state absorption or up-conversion
•   Conveniently pumped by reliable InGaAs diodes at 940nm(or 970nm)

•   High thermal conductivity and large mechanical strength

•   High optical quality


Specifications we can meet:


 Doping(atm%):   1.0% ~ 35%
 Orientation:   <111> or  <100>  crystalline direction
 Wavefront Distortion:   λ/10 per inch @ 632.8 nm
 Dimension Tolerances    Diameter: +0.0/-0.05 mm , Length: ±0.1 mm
 Surface Quality:   10/5 Scratch/Dig 
 Parallelism:   < 10
 Perpendicularity:   < 5 
 Clear Aperture:   > 90%
 Surface Flatness:   < λ/10 @ 632.8 nm
 Chamfer:   < 0.1 mm @ 45o
 Barrel Finish:   50-80 micro-inch (RMS) ,
 Size   Upon customer request
 Coating   Upon customer request
 Damage Threshold   750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz


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