YVO4 Substrate
Description
YVO4 is an excellent birefringent crystal for fiber optics applications. Which has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, interleavers, beam displacers and other polarizing optics.
Properties
| Transparency Range |
High transmittance from 0.4 to 5 μm |
| Crystal Symmetry |
Zircon Tetragonal, space group D4h |
| Crystal Cell |
a=b=7.12A;c=6.29A |
| Density |
4.22 g/cm3 |
| Hardness(Mho) |
5, glass-like |
| Hygroscopic Susceptibility |
Non-hygroscopic |
| Thermal Expansion Coefficiet |
αa=4.43x10-6/K;αc=11.37x10-6/K |
| Thermal Conductivity Coefficient |
//C:5.23 W/m/K;⊥C:5.10 W/m/K |
| Crystal Class: |
Positive uniaxial with no=na=nb,ne=nc |
| Thermal Optical Coefficient |
Dna/dT=8.5x10-6/K;dnc/dT=3.0x10-6/K |
| Refractive Indices, Birefringence (△n=ne-no) and Walk-off Angle at 45°(ρ) |
no=1.9929,ne=2.2154,△n=0.2225,ρ=6.04° at 630nm |
| 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 |
YVO4 Substrate Definition
YVO4 (Yttrium Orthovanadate) substrate refers to a crystalline material commonly used in various optical and optoelectronic applications. Here are some key points about YVO4 substrates:
1. Crystal structure: YVO4 has a tetragonal crystal structure, and yttrium, vanadium, and oxygen atoms are arranged in a three-dimensional lattice. It belongs to the orthorhombic crystal system.
2. Light transmission: YVO4 has a wide range of light transmission, from near ultraviolet (UV) to mid-infrared (IR) regions. It can transmit light from approximately 0.4 μm to 5 μm, making it suitable for a wide range of optical applications.
3. Birefringence: YVO4 has strong birefringence, that is, it has different refractive indices for different polarized light. This property is critical for applications such as waveplates and polarizing filters.
4. Nonlinear optical properties: YVO4 has excellent nonlinear optical properties. It can generate new frequencies or modify the properties of incident light through nonlinear interactions. This property is used in applications such as frequency doubling (second harmonic generation) of lasers.
5. High Laser Damage Threshold: YVO4 has a high laser damage threshold, which means it can withstand high-intensity laser beams without significant damage or degradation. This makes it suitable for high power laser applications.
6. Thermodynamic properties: YVO4 has good thermal stability and mechanical strength, enabling it to withstand temperature changes and mechanical stress without significant deformation or deterioration.
7. Chemical stability: YVO4 has chemical stability and is resistant to common solvents and acids, ensuring its durability and reliability under various operating conditions and environments.
YVO4 substrates are widely used in applications such as laser systems, optical amplifiers, frequency converters, beam splitters, and wave plates. Its combination of optical transparency, birefringence, nonlinear optical properties, high laser damage threshold, and good thermal and mechanical stability make it a versatile material in the fields of optics and optoelectronics.
