| Dopant Concentration | Er: ~50 at% | Wavefront Distortion | ≤0.125λ/inch(@1064nm) |
| Extinction Ratio | ≥25 dB | Rod Sizes | Diameter:3~6mm, Length:50~120 mm Upon request of customer |
| Dimensional Tolerances | Diameter:+0.000"/-0.002"Length: ± 0.02" | Barrel Finish | Fine Ground |
| Parallelism | ≤10" | Perpendicularity | ≤5′ |
| Flatness | λ/10 | Surface Quality | 10/5(MIL-PRF-13830B) |
| AR Coating Reflectivity | ≤ 0.25% (@2940nm) | ||
Basic Properties:
Physical and Optical Properties:
| Laser Transition | 4I11/2to4I13/2 | Laser Wavelength | 2940nm |
| Photon Energy | 6.75×10-20J(@2940nm) | Emission Cross Section | 3×10-20cm2 |
| Index of Refraction | 1.79 @2940nm | Pump Bands | 600~800 nm |
Erbium-doped yttrium aluminum garnet or Er:YAG crystals is an excellent laser crystal which lasers at 2.94 μm, This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. The 2.94μm is a eye-safe wavelength, which makes Er:YAG crystals widely be used in medical applications as dental (hard tissues), orthopedics, etc.
