Yb:YAG

Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped crystals. It can be pumped at 0.94 nm and generates 1.03 nm laser output.

Compared with the commonly used Nd:YAG crystal, Yb:YAG crystal has a larger absorption bandwidth in order 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, such as, its doubling wavelength is 515 nm very close to that of Ar-ion laser (514 nm),which makes it possible to replace large volume Ar-ion laser.


Advantages

Very low fractional heating, less than 11%

Very high slope efficiencyBroad 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

Doping

1atm%~ 30atm%

Orientation

<111> or <100>crystalline direction

Wavefront Distortion

λ/8 per inch @ 632.8 nm

Dimension Tolerances

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

Surface Quality

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

Parallelism

< 10″

Perpendicularity

< 5′ 

Clear Aperture

> 95%

Surface Flatness

<λ/10 @ 632.8 nm

Chamfer

< 0.1 mm @ 45o

Size

Upon customer request

Coating

AR/HR/PR coating upon customer’s request


Thread rod, slabs, Er:YAG, Nd:YAG, Ce:YAG, Cr:YAG, Tm:YAG,Ho:YAG and other ion doped YAG crystals are also available.




 

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