what are you looking for?
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.
Leave A Message
α-BBO (α-BaB2O4) is a negative uniaxial crystal which has large birefringence over a broad transparent range of 190nm to 3500nm. α-BBO is an excellent crystal especially in UV and high power applications. The physical, chemical, thermal, and optical properties of alpha-BBO crystal are similar to those of Beta-BBO. However, there is no second order nonlinear effect in alpha-BBO crystal due to the centrosymmetry in its crystal structure and thus it has no use for second order nonlinear optical processes. Instead, alpha-BBO is widely used for fabrication of polarizers, polarizing beam displacers, phase retarders, birefringent plates, and time delay compensators especially those for UV and high power lasers.
Read More
Plano-concave rectangular cylindrical lenses provide uni- axial negative imaging for anamorphic beam expansion and a wide range of applications.These lenses may also be used as mirror blanks if a concave cylindrical surface mirror is required.
Read More
Potassium Gadolinium Tungstate (KGd(WO₄)₂) crystal is an excellent stimulated Raman laser crystal with characteristics such as a wide light transmission range, good thermal conductivity, high damage threshold, large Raman shift coefficient, and high Raman gain. It can maintain high conversion efficiency and beam quality during the Raman frequency conversion process. The KGW crystal can withstand high pump power and is suitable for pump lights of various wavelengths, making it widely used in Raman lasers, laser frequency conversion, medical imaging, photodynamic therapy, environmental monitoring, spectroscopy research, material processing, and other fields.
Read More
Ytterbium-doped Potassium Gadolinium Tungstate (Yb:KGd(WO₄)₂, Yb:KGW) crystal is an excellent laser gain material, boasting numerous advantages over the widely used Nd³⁺-doped materials. Its wide spectral emission band of 1023-1060 nm enables the generation of short laser pulses (picosecond or femtosecond level). The broad absorption band at 980 nm and highly absorbent pump radiation allow it to efficiently utilize diode laser pumping. Compared with YAG doped with Yb³⁺ ions, KGW crystal has a larger absorption cross-section, which reduces the minimum pump intensity required to achieve transparency in the quasi-two-level system of Yb.
Read More
Ti:Sapphire crystal is the most widely used tunable solid-state laser material combining the supreme physical and optical properties with the extremely broad lasing range. Its lasing bandwidth can support pulses < 10fs making it the crystal of choice for femtosecond mode-locked oscillators and amplifiers. The absorption band of Ti:Sapphire centers at ~ 490 nm so it may be conveniently pumped by various laser sources such as argon ion lasers or frequency doubled Nd:YAG, Nd:YLF, Nd:YVO4 lasers at ~530nm. Laser designers are using Ti:sapphire to generate femtosecond pulses to create new industrial tools. A properly delivered femtosecond laser pulse interacts within the target leaving the surrounding area undisturbed. Newly developed femtosecond pulsed lasers micro-machine complex fine structures in glass, metal and other materials. Active waveguides can be written below the surface, integrating optical devices within the body of a substrate. Defects in photomasks can be repaired without disturbing neighbouring patterns. And it is now possible to achieve cellular resolution in vivo for medical diagnosis with femtosecond pulse lasers.
Read More
HGO grows LBO Nonlinear crystals using flux technology. LBO crystals is an excellent nonlinear crystal.For frequency doubling(SHG),tripling(THG) of Nd:YAG,Nd:YLF,Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications.
Read More
Beamsplitter Penta Prism by adding a wedge and with partial reflective coating on one of its leaning surfaces, Penta Prism can be used as Beamsplitter. Transmission/reflection (T/R) ratio of 50/50, or others for Beamsplitter Penta Prism is available upon request.
Read More
Double Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. Double-Convex Lenses are used in a range of industries or applications. HG OPTRONICS offers Double Convex lenses with a variety of coating options.
Read More
IPv6 network supported
