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
BK7 window is the most common type of window. It has good performance over visible and near infrared wavelength regions. At the same time, BK7 window is ideal for applications require minimal transmitted beam deviation. It is suitable for AR coating.
Read More
Silicon is used as an optical window primarily in the 3 to 5 micron band and as a subsrate for production of optical filters and windows. Silicon (Si) is grown by Czochralski pulling techniques (CZ) and contains some oxygen that causes an absorption band at 9 microns. To avoid this, material can be prepared by a Float-Zone (FZ) process. Optical silicon is generally lightly doped (5 to 40 ohm cm) for best transmission above 10 microns, and doping is usually boron (P-type) and phosphorus (N-type). After doping silicon has a further pass band: 30 to 100 microns which is effective only in very high resistivity uncompensated material.
Read More
Colored glass filters are optical components that control incident wavelength by distributing an optical absorbing substance in glass.
Read More
HGO grows Ho:YLF laser crystals using Czochralski technology. Ho:YLF is a very attractive laser material, because the lifetime of the upper laser level is much longer ( ~ 14 ms) than in Ho:YAG and the emission cross sections are higher. Additionally the thermal lens in Ho:YLF is much weaker, which helps to generate diffraction limited beams even under intense end-pumping. The primary advantage of directly pumping the Ho 5I7 is that it does not have to depend on energy transfer, which lends itself to various radiative and non-radiative losses. Up-conversion losses that have deleterious effect in high-energy Q-switched lasers are eliminated.
Read More
MgF2 or Magnesium Fluoride is positive uni-axial crystal with a very high optical transmittance from the vacuum UV to IR. It is regularly used for optical elements where extreme ruggedness and durability is required. It also has a large resistance to mechanical and thermal shock, to optical radiation, and is chemically stable, making it a very useful materials for UV and IR optics.
Read More
Penta Prisms are used to define right angles in optical systems. Penta Prisms, which provide right handed images,feature a ray deviation of 90°. Penta Prisms are five-sided prisms are unaffected by slight movements. HG OPTRONICS offers a variety of Penta Prisms for optimal performance in the Ultraviolet (UV), Visible, or Infrared (IR) spectrums.
Read More
Our beamsplitter plates can be used in high power laser system. When using beamsplitter plates, it is important to make it in mind that the two partial beams travel in different optical paths. The optical paths depend on the incident angle and the thickness of plates.
Read More
IPv6 network supported
