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The Yttrium
Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski
method. It 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.
Product Origin:
ChinaShipping Port:
Fuzhou, ChinaLead Time:
3-4weeks
Descriptions:
Yttrium Orthovanadate (YVO4) is ideal for optical polarizing components and in many applications including fiber optic isolators and circulators, interleavers, beam displacers and other polarizing optics.
Main applications:
1) Fiber-optic isolators
2) Beam displacers.
3) optical circulators
Comparison of basic properties betweenYVO4 and Other Birefringent Crystals.
|
|
YVO4 |
TiO2 |
CaCO3 |
LiNbO3 |
|
|
Thermal Expansion (/℃) |
c-axis |
11.4x10-6 |
9.2x10-6 |
26.3x10-6 |
16.7x10-6 |
|
a-axis |
4.4x10-6 |
7.1x10-6 |
5.4x10-6 |
7x10-6 |
|
|
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 crystal:
|
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 |
|
|
Sellmeier Equation（λ in μm） |
no2 = 3.77834 + 0.069736/(λ2 - 0.04724)
- 0.0108133λ2 |
|
HGO offers NdYVO4 specifications:
|
±0.1mm |
|
|
Flatness |
|
|
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 |
Why Choose HGO ?
HG OPTRONICS.,INC. has the ability to grow high purity YVO4 ( Un-doped Yttrium Orthovanadate) crystals. High quality of starting material is used for crystal growth and strict quality control is applied to our YVO4 absorption ,scattering loss, bulk loss , inclusions and all the other required processing specs which assures that each crystal from HGO will comply with customer’s specification and perform well in laser system. HGO has now completed a mass-production line and have strong ability to supply such crystals with large quantity in short time.
What is more, based on our advanced diffusion bonding technology, diffusion bonding composites of NdYVO4 and YVO4 are extremely useful and very popular for higher power Nd doped vanade based laser systems. High quality of diffusion bonding crystals NdYVO4 with YVO4 endcap are available from stock and also customization.
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