Nd:YLF Nd: YLF, grows by Czochralski technique, is an excellent crystal for mode-locked operation for it has advantages of weak thermal lensing, relatively broad fluorescence line width and naturally polarized oscillation. The use of high quality staring materials for crystal growth, whole boule interferometry, and precise inspection of scattering particle in crystal using He-Ne laser assures the each crystal will perform well. ADVANTAGES ● High power, low beam divergence, efficient single mode operation ● Thermal lensing lower than that of YAG ● Barrel side can be optimized for better heat handing ● Flat/flat ●Parallel/ anti-parallel wedged ●Brewster angle ●Concave/convex radii ●Cylinder grooved
Specifications
Material | Nd:YLF |
Dopant concentration | 1.1+/-0.1at% |
Dimension | Diameter: 3mm-8mm, Length: 10mm-120mm(upon customer’s request) |
Diameter tolerance | +0/-0.05mm |
Length tolerance | +/-0.5mm |
Orientation | <100> or <001> |
Extinction Ratio | ≥ 28 dB(depends on actual size) |
Wavefront Distortion | <λ/4 per inch @633.8nm |
Barrel finish | Ground |
Parallelism | <10 arc seconds |
Perpendicularity | <5 arc minutes |
Chamfer | <0.15×45° |
Scratch/Dig | 10-5@MIL-0-13830A |
Anti-Reflection coating | R<0.25%@1047/1053nm |
Flatness | λ/8@632.8nm |
Properties
Chemical formula | LiY 1.0-xNdxF4 |
Crystal structure | tetragonal |
Space Group | I41/a |
Mohs Hardness | 4-5 |
Melting Point | 825℃ |
Density | 3.99 g/cm3 |
Modulus of Elasticity | 85 GPa |
Thermal Conductivity Coefficient | 0.063 W/cm K |
Specific Heat | 0.79 J/g K |
Transparency region | 180-6700nm |
Spontaneous Fluorescence Lifetime | 485μs for 1% Nd doping |
Cell Parameters | a=5.16Å,c=10.85Â |
