Yb:YAG Crystals
Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the commonly used Nd:YAG crsytal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level 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. 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. Chemical: Yb:YAG Output Wavelength: 1.029 um Absorption Bands: 930 nm to 945 nm Pump Wavelength: 940 nm Melting Point: 1970°C Density: 4.56 g/cm3 Mohs Hardness: 8.5 Thermal Conductivity: 14 W.s /m /K @ 20°C
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Overview
Specifications
| Parameter | Value |
|---|---|
| Chemical Formula | Y₃Al₅O₁₂:Yb (0.1% to 15% Yb) |
| Crystal Structure | Cubic |
| Output Wavelength | 1.029 um |
| Laser Action | 3 Level Laser |
| Emission Lifetime | 951 us |
| Refractive Index [632 nm] | 1.8 @ 632 nm |
| Absorption Bands | 930 nm to 945 nm |
| Pump Wavelength | 940 nm |
| Absorption band about pump wavelength | 10 nm |
| Melting Point | 1970°C |
| Density | 4.56 g/cm³ |
| Mohs Hardness | 8.5 |
| Lattice Constants | 12.01Ä |
| Thermal Expansion Coefficient [[111]；0-250°C] | 7.8×10⁻⁶ /K , [111], 0-250°C |
| Thermal Conductivity [[111]；0-250°C] | 7.8×10⁻⁶ /K , [111], 0-250°C |
| Orientation | within 5° |
| Diameter | 3 mm to 10mm |
| Diameter Tolerance | +0.0 mm/- 0.05 mm |
| Length | 30 mm to 150 mm |
| Length Tolerance | ± 0.75 mm |
| Perpendicularity | 5 arc-minutes |
| Parallelism | 10 arc-seconds |
| Flatness | 0.1 wave maximum |
| Surface Finish | 20-10 |
| Barrel Finish | 400 grit |
| End Face Bevel [45° angle] | 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. |
| Clear aperture | Central 95% |
| Coatings [1.029 um；each face] | Standard coating is AR at 1.029 um with R<0.25% each face. Other coatings available. |
Applications
Key Features
Datasheet
Supplier Information
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