Nd:YVO4
Description:
Nd:YVO4 is one of the most efficient laser host crystals for all-solid-state laser diode pumped lasers. Its large stimulated emission cross-section at lasing wavelength, high absorption coefficient and wide absorption bandwidth at pump wavelength, high laser induced damage threshold as well as good physical, optical and mechanical properties make it an excellent crystal for high power, stable and cost-effective diode pumped solid-state lasers.
Physical Properties:
| Atomic Density | 1.26x1020 atoms/cm³ (Nd 1.0%) |
| Crystal Structure | Zircon Tetragonal, space group D4h-I4/amd |
| a=b=7.1193, c=6.2892 | |
| Density | 4.22g/cm3 |
| mols | 4-5 (Glass-like) |
| Thermal Expansivity (300K) | aa=4.43x10-6/K |
| ac=11.37x10-6/K | |
| Thermal Conductivity Coefficient (300K) | //C:0.0523W/cm/K |
| ⊥C:0.0510W/cm/K |
Optical Properties:
| Laser Wave | 1064nm, 1342nm ,914nm |
| Thermo-Optical Coeffecient (300K) | dno/dT=8.5x 10-6/K |
| dne/dT=2.9x 10-6/K | |
| Sellmeier Equation | no²=3.77834+0.069736/(l2-0.04724)-0.0108133.l² |
| (for pure YVO4 crystals) | ne²=4.59905+0.110534/(l2-0.04813)-0.0122676.l² |
| Excited Emission Section | 25x 10-19cm² @1064nm |
| Fluorescence Lifetime | 90ms |
| Absorption Coefficient | 31.4cm-1 @810nm |
| Extrinsic Loss | 0.02cm-1 @1064nm |
| Gain Bandwidth | 0.96nm @1064nm |
| Polarized Light Shoot | polarization; parallel to optic axis(c-axis) |
| LD Pump Light Throughput Efficiency | >60% |
Specifications:
| Nd: Dopant Level | 0.1 atm% - 3.0 atm% |
| Wavefront Distortion | < λ/8 @ 633 nm |
| Orientation | ±0.5deg. |
| Dimensional Tolerance | ±0.1mm |
| Surface quality | 10/5 Scratch/Dig per MIL-O-13830B |
| Flatness | λ/10 @ 633 nm |
| Clear Aperture | > Central 90% |
| Parallelism | < 10 arc sec |
| Intrinsic Loss | < 0.1% cm-1 |
Note: Other specifications of Nd:YVO4 crystals and coatings are also available upon request.