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Yb:YAG Crystal  

(Ytterbium Doped Yttrium Aluminum Garnet)

 

It 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

 

HGO offer Yb:YAG specifications

Doping(atm%):

1.0% ~ 35%

Orientation:

 <111> or  <100>  crystalline direction

Wavefront Distortion:

λ/10 per inch @ 632.8 nm

Dimension Tolerances: 

rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm

Surface Quality:

10/5 Scratch/Dig MIL-O-1380A

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

AR/HR/PR coating upon customer’s request

Damage Threshold

750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz

Quality Warranty Period

   One year under proper use

Slabs, thread rod, Er:YAG, Nd:YAG, Cr:YAG,Ce:YAG, Tm:YAG,Ho:YAG and other ion doped YAG crystals are also available upon request.

 

 

Yb:YAG crystals with diffusion bonded undoped YAG endcaps or Q-switch are also available from HG Optronics.,Inc. Please visit here.