Yb:YAG
Chemical formula: Yb3+:Y3Al5O12; melting point: 1970℃; density: 4.56g/cm3; laser wavelength: 1030 nm; flatness: < λ/10; parallelism: ≤10"; perpendicularity: ≤5′; surface finish: 10/5. Yb:YAG is a promising solid-state laser medium. The source describes Yb4+ ions with a 4f13 electronic structure, simple absorption/emission bands, no excited-state self-absorption or upconversion from the upper laser level, and high radiative quantum efficiency. Broad absorption lines peaking at 940nm and 970nm and high absorption coefficients match InGaAs diode emission for LD pumping. Excellent YAG optical and thermal properties make it suitable for efficient high-average-power LD-pumped lasers. LD-pumped Yb:YAG output above 2KW has been developed internationally for automotive laser processing. Spectral properties: LD pump wavelength 940nm or 970nm; thermo-optic coefficient 7.3×10-6/℃; refractive index 1.82.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Chemical Formula | Yb3+:Y3Al5O12 |
| Crystal Structure | cubic |
| Lattice Constant | 12.01A |
| Melting Point | 1970 ℃ |
| Density | 4.56 g/cm3 |
| Mohs Hardness | 8.5 |
| Coefficient of Thermal Expansion [0 - 250 °C] | 7.8 x 10-6x °K-1,, 0 - 250 °C |
| Coefficient of Thermal Expansion [0~250 ℃] | 7.7×10-6/ ℃ ,(0~250 ℃ ) |
| Coefficient of Thermal Expansion [0~250 ℃] | 8.2×10-6/ ℃ ,(0~250 ℃ ) |
| Thermal Conductivity [25°C] | 0.14 W x cm-1x °K-1 |
| Single-Pass Loss [1064nm] | 0.003 cm-1 |
| Laser Transition | 2F5/2 → 2F7/2 |
| Laser Wavelength | 1030nm |
| Photon Energy [1030nm] | 1.93×10-19J(@1030nm) |
| Emission linewidth | 9nm |
| Emission Cross-Section | 2.0×10-20cm2 |
| Dopant Concentration | 0.5─30 atm% |
| Orientation | ±5° |
| Flatness | < λ/10 |
| Parallelism | ≤ 10" |
| Perpendicularity | ≤ 5 ′ |
| Surface Finish [MIL-O-13830A] | 10/5 Scratch / Digper MIL-O-13830A |
| Interference Fringes | ≤ 0.125λ/inch |
| Extinction Coefficient | ≥ 30dB |
| Dimensions - Diameter | 2 ～ 20mm |
| Dimensions - Length | 5 ～ 150mm |
| Dimensions | According to Customer Requirements |
| Dimensional Tolerance - Diameter | +0.00"/-0.05"mm |
| Dimensional Tolerance - Length | ± 0.02" |
| Dimensional Tolerance - Chamfer [45º] | <0.1 mm @ 45º |
| Anti-Reflection Coating System [1030nm] | ≤ 0.2% (@1030nm) |
Key Features
Datasheet
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Supplier Information
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