Site Map | Contact Us |
Crystals Laser Crystals Yb : YAG

Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the  commonly used Nd:YAG crsytal , Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level 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.

Very low fractional heating, less than11%                

Very high slope efficiency

Broad absorption bands, about mailto:8nm@940nm

No excited-state absorption or up-conversion

Conveniently pumped by reliable InGaAs diodes

at 940nm(or 970nm) High thermal conductivity

High optical quality



Basic Properties:

Please view Laser crysals physical Properities (dpf format)

The Sellmeier equations (l in µm for YAG):

n ^2 = 2.08745 + 1.2081 l ^2 /(l^ 2 - 0.02119 )+ 17.2049 l ^2 /(l ^2 - 1404.45 )

Optical and Spectral Properties

Please view Laser crysals optical and Spectral Properities (dpf format)

Yb:YAG's Specifications:


<111> or <100]> crystalline within 5°

Wavefront distortion :

l /8 per inch @ 633 nm

Extinction Ratio:


Dimension Tolerances

Rods with diameter: ±0.025 mm , Length: ±0.5 mm

Surface quality:

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


< 10 arc seconds


< 5 arc minutes


< l /10 @ 633 nm


<0.1 mm @ 45deg.

Barrel Finish:

50-80 micro-inch (RMS) ,

AR Coating Reflectivity

< 0.25%

Note: The other specification and dimension is available too

Copyright©2006 CLaser. All Rights Reserved