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Item: YAG-006
Item: YAG-006
Product Name: Nd:GdVO4
Nd:GdVO4 is a new type and high efficient laser crystal for diode pumping compact solid state laser due to its wide absorption bandwidth at 808nm, high absorption coefficient, large stimulated emission cross section and good thermal conductivity.
Advantages of Nd:GdVO4 Crystal
- Wide absorption bandwidth at 808nm;
- High absorption coefficient at pumping wavelengths;
- Large stimulated emission cross section at laser wavelength;
- Good thermal conductivity;
- High slope efficiency compared to Nd:YAG;
- Low threshold and high gain
Material and Specifications
| Dopant concentration | 0.1~3.0at% |
| Orientation | <100> within 5° |
| Wavefront Distortion | ≤λ/8 @632.8nm |
| Extinction Ratio | ≥ 20dB @632.8nm |
| Sizes | Diameter:3~8mm, Length:15~40mm Upon request of customer |
| Dimensional Tolerances | Diameter+0.0/-0.03mm,Length ±0.5mm |
| Parallelism | ≤ 10 arc seconds |
| Perpendicularity | ≤5' |
| Flatness | λ/10@633nm |
| Surface Quality | 10-5(MIL-O-13830A) |
| Chamfer | 0.07"±0.015" |
| AR Coating Reflectivity | ≤ 0.25% |
Optical and Spectral Properties of Nd:GdVO4 Crystal
| Laser Transition | 4F3/2—4I11/2,4F3/2—4I13/2 |
| Laser Wavelength | 1062.9nm,1340nm |
| Emission Linewidth | 3nm |
| Emission cross section (E||C,at1064nm) | 7.6x10-19 cm2 |
| Absorption Cross Section (E||C, at 808nm) | 4.9x10-19 cm2 |
| Absorption coefficient(E||C, at 808nm) | 74cm-1 |
| Fluorescence Lifetime (Nd1at%) | 100μs |
Physical and Chemical Properties
| Chemical formula | NdxGd1-xVO4 |
| Crystal structure | Tetragonal |
| Lattice constant | a=0.721nm, b=0.635nm |
| Thermal Conductivity (<110>) | 11.7W/(m.K) |
| Thermal Expansion(300K) | αa=1.5×10-6/K,αc=7.3×10-6/K |
| Melting Point | 1680oC |
| Density | 5.47g/cm3 |
| Mohs Hardness | 4.6-5.0 |
| Index of Refraction (at 1064nm) | n0=1.972, ne=2.192 |