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Er:YAG Crystal
Er:YAG crystal is an excellent laser crystal which lasers at 2.94μm. This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. It is a well known material for medical applications
Product Details:
Er:YAG crystal is an excellent laser crystal which lasers at 2.94μm. This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. It is a well known material for medical applications
1. High slope efficiency
2. Operate well at room temperature
3. Operate in a relatively eye-safe wavelength range
Dopant concentration | 20at% and 50 at% |
Orientation | [100] within 5° |
Wavefront Distortion | ≤0.125 λ/inch(@1064nm) |
Optical Quality | Interference fringes ≤ 0. 125 /inch |
Size | Rods: Ø (3~10)mm×(30~180)mm (L) |
Dimensional tolerances | Diameter: +0.00/-0.05mm |
Parallelism | ≤10" |
Perpendicularity | ≤5′ |
Flatness | λ/10 @632.8nm |
Surface Quality | 10-5(MIL-O-13830A) |
AR Coating Reflectivity | ≤ 0.25% (@2940nm) |
Damage threshold | ≥ 500MW/cm2 10ns 1Hz at 1064nm |
Crystal Structure | Cubic |
Lattice Parameters | 12.01 Å |
Melting Point | 1970℃ |
Moh Hardness | 8.5 |
Density | 4.56±0.04g/cm3 |
Specific Heat (0-20) | 0.59J/g.cm3 |
Thermal Expansion Coefficient | [100]Direction:8.2×10-6/℃(0~250℃) |
Thermal Conductivity | 14W/m/K(@20℃) |
10.5W/m/K(@100℃) | |
Laser Transition | 4I11/2 to 4I13/2 |
Laser Wavelength | 2940nm |
Emission Cross Section | 3×10-20 cm2 |
Index of Refraction | 1.79 @2940nm |
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