Yb:YAG
Ytterbium – Doped : Yttrium Aluminium Garnet Laser Crystals
Yb:YAG shows great promise as a high power laser material. Several applications are being developed in the field of industrial lasers, such as metal cutting and welding. With high quality Yb:YAG now available, additional fields and applications are being explored.
Yb:YAG’s advantage is a wide pump band and an excellent emission cross section. It is ideal for diode pumping. The broad absorption band enables Yb:YAG to maintain uninterrupted pump efficiency across the typical thermal shift of diode output. High efficiency means a relatively small dimension Yb:YAG laser crystal will produce high power output. Based on the YAG host crystal, Yb:YAG can be quickly integrated into the laser design process. This combination of properties enables straightforward elegant laser designs, and allows high powered lasers to be manufactured more easily ; Yb:YAG. Laser designers can apply their depth of experience.
We offer excellent quality Yb:YAG laser crystals as both rods and discs that meet your exact specifications. Our experienced staff, can work with you to bring out the superior performance of your high power 1 micron output laser system.
Applications
- With a wide pump band and excellent emission cross-section Yb:YAG is an ideal crystal for diode pumping
- High Output Power 1.029 1mm
- Laser Material for Diode Pumping
- Materials Processing, Welding and Cutting
Optical and Laser Properties
| Laser
Action |
3
Level Laser |
Emission
Cross-section |
Σ = 2.1 x 10-20
cm2 (± 10%) |
| Emission
Lifetime |
951 µsec | Refractive
Index |
1.8
at 632 nm |
| Absorption
Bands |
930
nm to 945 nm |
Chemical
Formula |
Y3Al5O12:Yb
(0.1% to 15% Yb) |
| Output
Wavelength |
1.029 µm |
Yb:YAG Laser Rod Standard Fabrication Specifications
| Feature | Standard | Special Order |
| Crystal
Orientation |
<111> within 5° | Available |
| Diameter | 3
mm to 10mm |
Available |
| Daimeter
Tolerance |
+0.0
mm/- 0.05 mm |
Available |
| Length
(plano/plano) |
30
mm to 150 mm |
Available |
| Length
Tolerance |
± 0.75 mm | ± 0.50 mm |
| Perpendiculairity
of End Faces (plano/plano) |
5
arc-minutes |
2
arc-minutes |
| Parallelism
of End Faces (plano/plano) |
10
arc-seconds |
|
| Flatness | 0.1
wave maximum |
0.10
wave maximum |
| (plano/plano) | over
90% of aperture |
over
full aperture |
| Surface
Finish at 5X |
20-10
(scratch & dig) |
10-5
(scratch & dig) |
| Barrel
Finish |
400
grit |
Polished
approx. 80-50 |
| End
Face Bevel |
0.075
mm to 0.12 mm at 45° angle |
|
| Chips | No
chips allowed on end face of rod; chip having maximum length of 0.3 mm permitted to lie in the area of bevel and barrel surfaces. |
|
| End
Configurations |
plano/plano,
plano/wedge, wedge/wedge or Brewster cut. Plano ends can be finished flat, concave or convex |
|
| Coatings | Standard
coating is AR at 1.029 µm with R<0.25% each face. Other coatings available. |
|
