€280.00 – €310.00
Nd:YVO4 crystals are usually used in lasers to generate the same wavelength radiation as Nd:YAG ( 1064 nm ). Other important emission wavelengths of this crystal are 914 and 1342 nm. These types of lasers most comonly are pumped with diodes, however they can be lamp pumped too. Compared with Nd:YAG, Nd:YVO4 has a higher pump absorption rate with broader wavelength range for pumping. Nd:YVO4 also has a shorter upper state lifetime which reduces thermal loss effects.
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Transmitting wavefront distortion | ≤λ/4 @ 633nm |
Clear aperture | >90% central area |
Chamfer | ≤0.2mm@45degree |
Chip | ≤0.1mm |
Flatness | λ/8 @ 633 nm |
Scratch/Dig | 10-5 S-D |
Parallelism | >10arc seconds |
Perpendicularity | ≤5 arc minutes |
Angle tolerance | ≤0.5° |
Doping concentration tolerance: | ±0.05%(atm%<1%), ±0.1%(atm%≥1%) |
Property | Value |
chemical formula | Nd3+:YVO4 |
crystal structure | tetragonal |
mass density | 4.22 g/cm3 |
Moh hardness | 5–6 |
Young’s modulus | 133 GPa |
tensile strength | 53 MPa |
melting point | 1810 °C |
thermal conductivity | ≈ 5 W / (m K) (values around 9–12 are also found in the literature) |
thermal expansion coefficient | 11 × 10−6 K−1 (c direction), 4.4 × 10−6 K−1 (a direction) |
transparency range | 0.3–2.5 μm |
birefringence | positive uniaxial |
refractive index at 1064 nm | 2.17 for c polarization (extraordinary), 1.96 ordinary index |
temperature dependence of refractive index | 3 × 10−6 K−1 in c direction, 8.5 × 10−6 K−1 in the a direction |
Nd density for 1% at. doping | 1.24 × 1020 cm−3 |
fluorescence lifetime | 90 μs |
absorption cross section at 808 nm | 60 × 10−20 cm2 (c polarization) |
emission cross section at 1064 nm | 114 × 10−20 cm2 (c polarization) |
gain bandwidth | 1 nm |