Yb:YAG

Yb:YAG

Ytterbium-doped yttrium aluminum garnet crystal (Yb:YAG) is a laser material usually used in DPSS lasers because of very good overall performance. It can be pumped at 940 nm or 969 nm and emit 1030 nm. It is more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the commonly used Nd:YAG crystals, Yb:YAG crystals has a much larger absorption bandwidth, a longer upper-laser level lifetime, and three to four times lower thermal loading per unit pump power. In addition, Yb:YAG second harmonic at 515nm may replace Ar-ion laser which emits at 514nm.

  • Optola offers wide range of Yb-dopant concentration selection 0.2%-30% at %
  • High damage threshold
  • Different Coatings 

Parallelism

< 10 arc seconds

Perpendicularity

< 10 arc minutes

Chamfer

< 0.1 x 45°

Barrel finish

ground or polished

Wavefront Distortion

<λ/10 per inch at 632.8nm

Surface flatness

<λ/10 at 632.8nm

Surface quality

10-5 S-D

Clear aperture

Central 90%

Chemical Formula

Yb:Y3Al5O12

Crystal Structure

Cubic

Lattice Constants

12.01 Å

Melting Point

1970C°

Density

4.56 g/cm3

Mohs Hardness

8.5

Thermal Expansion Coefficient

7.8×10-6 /K , [111], 0-250C°

Thermal Conductivity

14 W.s /m /K @ 20C°

Loss Coefficient

0.003 cm-1

Index of Refraction

1.82

Lasing Wavelength

1030 nm

Pump Wavelength

940 nm or 969nm

Absorption band about pump wavelength

~10 nm