Er:YAG
Erbium-doped yttrium aluminum garnet(Er:YAG) combine various output wavelength with the superior thermal and optical properties of YAG. It’s an excellent...
Er:YAG
Erbium-doped yttrium aluminum garnet(Er:YAG) combine various output wavelength with the superior thermal and optical properties of YAG. It’s an excellent laser crystal which lasers at 2.94um highly surface cutting laser. It is a well known material for medical applications.
- ManufacturerOST Photonics
- CategoryLaser Crystal
- Lead TimeQuoted per order
- CustomizationSize, orientation and surface finish to drawing
Er:YAG Laser Crystal
Advantages
1 ) Very high slope efficiency
2 ) Operates well at room temperature
3 ) Operate in a relatively eye-safe wavelength range
Specifications
| Material | Er:YAG |
| Dopant concentration | Er: ~50 at% |
| Orientation | <111> |
| Dimensions | Diameter:2mm-50mm, Length:5mm-180mm(Upon customer’s request) |
| Diameter tolerance | +0/-0.04mm |
| Length tolerance | +0.5/-0mm |
| Chamfer | 0.1mm@45° |
| Extinction Ratio | >25dB(depends on actual size) |
| Flatness | <λ/[email protected] |
| Barrel Finish | Ground Finish 400#Grit |
| Surface Quality | 10-5 @MIL-0-13830A |
| Chips | <0.1mm |
| Perpendicularity | <5 arc minutes |
| Parallelism | <10 arc seconds |
| Wavefront Distortion | λ/8 per inch @632.8nm |
| Damage Threshold | >500MW/cm2 |
| Anti-Reflection coating | R<0.20%@2940nm per surface |
Properties
| Chemical Formula | Er3+:Y3Al5O12 |
| Laser Transition | 4I11/2 to 4I13/2 |
| Photon Energy | 6.75×10-20J@2940nm |
| Laser Wavelength | 2940nm |
| Emission Cross Section | 3×10-20 cm2 |
| Index of Refraction | 1.79@2940nm |
| Pump Bands | 600~800nm |
| Moh Hardness | 8.25 |
| Melting Point | 1965℃ |
| Thermal Conductivity | 11.2W/m/K |
| Thermal shock Resistance | 790W/m |
Other Laser Crystal Materials
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