Nd:YLF
Nd:YLF suits short-pulse mode locking,with very small thermal lensing,broad fluorescence and linear polarization. Thermal lensing is much below YAG;small stimulated-emission cross section favors low-threshold CW. Medium-repetition/high-average-power Q-switched mode locking,efficient single mode,high power/low divergence and linear polarization favor efficient Q-switching/doubling.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Dopant Concentration | Nd:0.1∽1.0at% |
| Crystal Orientation | <100> or <001>, Deviation ±5° |
| Transmitted Wavefront Distortion [632.8nm] | ≤0.125λ/inch@632.8nm |
| Dimensions - Diameter | 3∽8mm |
| Dimensions - Length | 10∽100mm |
| Cylindrical Processing | Fine grinding, polishing and threading |
| End-Face Processing | Flat, inclined surface, bevel angle, spherical surface |
| End-Face Parallelism | ≤10″ |
| End-face perpendicularity to rod axis | ≤5′ |
| End-Face Flatness [632.8nm] | ≤λ/10 @632.8nm |
| Surface Quality [MIL-O-13830B] | 10-5(MIL-O-13830B) |
| Edge Bevel | 0.15±0.05mm |
| Antireflection Coating Reflectance [AR/AR；1047/1053nm] | AR/AR@1047/1053nm; R＜0.2% |
| Coating Laser Damage Threshold [10ns；10Hz] | ≥1.0GW/cm²; 10J/cm²(10ns,10Hz) |
| Laser Wavelength | 1047nm,1053nm |
| Emission Cross-Section [E∥C；1047nm] | 1.5x10⁻¹⁹cm²@1047nm |
| Emission Cross-Section [E┸C；1053nm] | 1.2x10⁻¹⁹cm²@1053nm |
| Fluorescence Lifetime [1.0at%Nd] | 485μs@1.0at%Nd |
| Laser Transition | ⁴F₃/₂—>⁴I₁₁/₂ |
| Refractive Index | nₒ=1.443 nₑ=1.464 @633nm; nₒ=1.448 nₑ=1.470 @1064nm |
| Crystal Structure | Tetragonal Crystal System |
| Mohs Hardness | 4-5 |
| Thermal Conductivity | 0.06W/cm/K |
| Melting Point | 825℃ |
| Density | 3.95g/cm³ |
| Tensile strength | 3.3x10⁸dynes cm⁻² |
| Thermal Expansion Coefficient - [100] Direction | 13×10﹣⁶/K |
| Thermal Expansion Coefficient - [001] Direction | 8×10﹣⁶/K |
| Young's Modulus | 7.5x10¹¹dynes cm⁻² |
Datasheet
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