what are you looking for?
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.
Product Origin:
ChinaShipping Port:
Fuzhou, ChinaLead Time:
3-4weeks
Descriptions:
a-BBO Crystal alpha -Barium Borate (α-BaB2O4) is a negative uniaxial crystal which has large birefringence over a broad transparent range of 190nm to 3500nm. α-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.
Main applications:
1) High power Beam displacers for isolators.
2) High power Polarizer
3) Time delay compensators
Advantages:
4) High UV transmittance
5) Large birefringence
6) High damage threshold
Basice properties of YVO4 crystal:
|
Transparency Range |
190-3500nm |
|
Hygroscopic Susceptibility |
Low |
|
Density |
3.85g/cm3 |
|
Mohs Hardness |
4.5 |
|
Thermal Expansion Coefficients（/℃） |
9.3×10-6（C） 9.5×10-6（A） |
|
Damage Threshold |
1GW |
|
Refractive Indices |
no=1.6776，ne=1.5534，at 532nm no=1.6579，ne=1.5379，at 1064nm |
|
Sellmeier Equation（λ in μm） |
no2=2.7471+0.01878/(λ2-0.01822)-0.01354λ2 |
HGO offers a-BBO specifications:
|
Tolerance of cutting angle |
△θ≤±0.25°,△φ≤±0.25° |
|
±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 supply high quality α-BBO (α-BaB2O4) in mass production quantity. Comparing with YVO4 , a-BBO crystal is more suitable for high power beam displacer for isolators and more and more isolators manufactures are looking for a-BBO as replacement of YVO4 beam displaces especially in high power system. In the past few years ,HGO has completed a mass-production line for high power a-BBO beam dispalcers and have wide experiences and strong ability to supply such crystals with large quantity and in short delivery time.
Leave A Message
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.
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
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
Prisms are transparent optical devices which refract or reflect light. They have manifold applications in laser technology.
Read More
Plano Concave Lenses are ideal for beam expansion, light projection, or for expanding an optical system's focal length. Plano Concave Lenses, which have one concave surface, are Optical Lenses with negative focal lengths. Plano-Concave Lenses should be shaped with the plano, or flat, surface towards the desired focal plane.Plano-Concave Lenses are ideal for use in a range of applications or industries. HG OPTRONICS offers Plano-Concave lenses with a variety of coating options.
Read More
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.
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 Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.
Read More
IPv6 network supported
