Yb:YAG
Yb: YAG 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
Our capability:
| Doping(atm%): | 1.0% ~ 35% |
| Orientation: | <111> or <100> crystalline direction |
| Wavefront Distortion: | λ/10 per inch @ 632.8 nm |
| Dimension Tolerances： | Diameter: +0.0/-0.05 mm , Length: ±0.1 mm |
| Surface Quality: | 10/5 Scratch/Dig |
| 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 | Upon customer request |
| Damage Threshold | 750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
