YVO4 Laser Crystals
Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown using the Czochralski method. It exhibits excellent temperature stability alongside robust physical and mechanical properties. Thanks to its broad transparency range and large birefringence, YVO4 is highly ideal for optical polarizing components. It serves as a superior synthetic alternative to Calcite (CaCO3) and Rutile (TiO2) crystals across a wide array of applications, including fiber optic isolators and circulators, interleavers, beam displacers, and other precision polarizing optics. At Atr Crystal, we provide high-quality YVO4 crystals engineered to meet the stringent demands of your advanced optical systems.
Product Category:
Birefringent Crystals
Applications of YVO4 Laser Crystals
1 )Fiber-optic isolators
2 )Beam displacers
3 )Optical circulators
Advantages of YVO4 Laser Crystals
1 )Large birefringence coefficient
2 )Large absorption coefficient
3 )Good transmission from 400nm to 4000nm
4 )High damage threshold
| Specifications of YVO4 Laser Crystals | |
| Dimension Tolerance | ±0.1mm |
| Flatness | λ/10 @ 632.8nm |
| Wavefront distortion | λ/4@ 632.8nm |
| Surface Quality | 10/5 per MIL-O-13830B |
| Parallelism | 10″ |
| Perpendicularity | 10′ |
| Bevel/Chamfer | <0.1mm@45deg. |
| Chips | <0.1mm |
| Clear Aperture | >95% |
| Coating | AR/HR (IAD, EB, IBS) coating upon customer’s request |
| Damage Threshold | 750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
| Quality Warranty Period | One year under proper use |
| Comparison of Basic Properties Between YVO4 and Other Birefringent Crystals | |||||
| YVO4 | TiO2 | CaCO3 | LiNbO3 | ||
| Thermal Expansion (/℃) | c-axis | 11.4×10^-6 | 9.2×10^-6 | 26.3×10^-6 | 16.7×10^-6 |
| a-axis | 4.4×10^-6 | 7.1×10^-6 | 5.4×10^-6 | 7×10^-6 | |
| Refractive Index | no | 1.9447@1550nm | 2.454@1530nm | 1.6346@1497nm | 2.2151@1440nm |
| ne | 2.1486@1550nm | 2.710@1530nm | 1.4774@1497nm | 2.1413@1440nm | |
| Birefringence(ne-no) | 0.2039@1550nm | 0.256@1530nm | -0.1572@1497nm | -0.0738@1440nm | |
| Mohs Hardness | 5 | 6.5 | 3 | 5 | |
| Deliquescence | None | None | Weak | None | |
| Transparency range | 0.4-5μm | 0.4-5μm | 0.35-2.3μm | 0.4-5μm | |
| Basice Properties of YVO4 Crystals | |
| Transparency Range | High transmittance from 0.4 to 5μm |
| Crystal Symmetry | Zircon Tetragonal, space group D4h |
| Crystal Cell | a=b=7.12Å，c=6.29Å |
| Density | 4.22g/cm3 |
| Mohs Hardness | 5 |
| Hygroscopic Susceptibility | Non-hygroscopic |
| Thermal Expansion Coefficient | αa = 4.43×10^-6/K；αc = 11.37×10^-6/K |
| Thermal Conductivity Coefficient | //C: 5.23 W/m/K； ⊥C: 5.10 W/m/K |
| Thermal Optical Coefficient | dna/dT = 8.5×10^-6/K；dnc/dT = 3.0×10^-6/K |
| Crystal Class | Positive uniaxial with no=na=nb, ne=nc |
| Refractive Indices, Birefringence | no = 1.9929, ne = 2.2154, Δn = 0.2225, ρ= 6.04° at 630nm |
| (Δn = ne- no) | no = 1.9500, ne = 2.1554, Δn = 0.2054, ρ= 5.72° at 1300nm |
| and Walk-off Angle @ 45° (ρ) | no = 1.9447, ne = 2.1486, Δn = 0.2039, ρ= 5.69° at 1550nm |
| Sellmeier Equation（λ in μm） | no²= 3.77834 + 0.069736/(λ² – 0.04724) – 0.0108133λ² |
| ne²= 4.59905 + 0.110534/(λ²- 0.04813) – 0.0122676λ² | |
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