Products
Home /CRYSTALS /

Birefringent Crystals

/a-BBO Crystal alpha -Barium Borate

a-BBO Crystal alpha -Barium Borate

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:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

    3-4weeks
Share To : f t y b l ins
  • Product Detail

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/℃)

9.3×10-6C

9.5×10-6A

Damage Threshold

1GW

Refractive Indices

no=1.6776ne=1.5534at 532nm

no=1.6579ne=1.5379at 1064nm

Sellmeier Equationλ in μm

no2=2.7471+0.01878/(λ2-0.01822)-0.01354λ2
ne2=2.37153+0.01224/(λ2-0.01667)-0.01516λ2

 

 

HGO offers a-BBO specifications:

Tolerance of cutting angle

θ≤±0.25°,φ≤±0.25°

Dimension Tolerance

±0.1mm

Flatness

λ/10 @ 632.8nm

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
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Related Products
Pure YVO4 Yttrium Orthovanadate crystals
YVO4 crystal Yttrium Orthovanadate

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
China Optical Sapphire Windows
Magnesium Fluoride (MgF2) Windows

Magnesium Fluoride Windows applicable for wide range spectrum, transmits well into the VUV region at the hydrogen Lyman-alpha line and beyond and it is particularly useful for Excimer laser application.It is resistant to mechanical and thermal shock, to radiation, and is chemically stable.    

Read More
High Reflective Dichroic Mirror
High Reflective Broadband Dichroic Mirrors

The dichroic mirror is a mirror with significantly different reflection or transmission properties at two different wavelengths, it’s characterized by almost complete transmission of light at certain wavelengths and almost complete reflection of light at other wavelengths. It can be widely used in Laser technology applications.

Read More
China Customized Dispersion Prism Manufacturers
30° - 60° - 90° Littrow Dispersion Prisms

Dispersion Prisms are used in applications that require separating the incident light into its component wavelengths. For example, when white light enters a Dispersion Prism, it is separated into its three components: red, green, and blue. Dispersion Prisms are ideal for spectroscopy or laser tuning.

Read More
Diode pumped picosecond Pr:YLF laser crystals
Pr:YLF crystals Protactinium doped Yttrium Lithium Fluoride

HGO grows Pr:YLF laser crystals using Czochralski technology. Pr3+:YLF has been found as promising laser material for producing visible lasers directly and UV lasers through intracavity second-harmonic generation. Very few laser materials have the necessary properties for the realization of lasing in the visible spectral range. Trivalent praseodymium (Pr3+) is known to be an interesting laser ion for use with solid-state lasers in the visible spectral range because of its energy levels scheme, providing several transitions in the red (640 nm, 3P0 to 3F2), orange (607 nm, 3P0 to 3H6), green (523 nm, 3P0 to 3H5), and dark red (720 nm, 3P0 3F3+3F4) spectral regions.

Read More
retardation plates or phase shifters
Waveplate

Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocities of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices. This difference in velocities gives rise to a phase difference when the two beams recombine.

Read More
Optical Glass Domes
Optical Domes

Optical domes are lenses with two concentric spherical surfaces. Sometimes they are being referred to as bent plan parallel plates. Consequently it is customary to define parallelism between two surfaces as the maximum thickness variation between the two surfaces.

Read More
BBO Nonlinear crystal
BBO Nonlinear crystal Beta-Barium Borate Crystal

HGO grows BBO Nonlinear crystals using flux technology. BBO crystal transparency ranges from 188 nm to 5,2 µm, which includes reasonable transparency from 3-5,2 µm for few tens µm thick crystals, while their phase-matchable range spans almost over the entire transparency range. Combined with other magnificent properties of BBO, it is favorable for numerous nonlinear parametric applications. It is worth to mention that BBO crystals have the highest nonlinearity in the UV range out of all common nonlinear crystals.

Read More
Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

about

contact