Porudct List
News
- Ultra Photonics will take part in International Laser Exhibition in Beijing on Oct 26-28
- WelcometovisitourboothinBeijing.
Contact
- TEL：+86 591 83508210
- FAX：+86 591 83448303
- E-mail：sales@u-photonics.com
- Add：No.758, Qi'an Road, Fuwan Industrial District
a-BBO
 |
High temperature form BBO (α -BaB2O4) are negative uniaxial crystals. They have large birefringence over a broad transparent range of 190nm to 3500nm. The physical, chemical, thermal and optical properties of α -BBO crystals are similar to those of ß -BBO. However, the nonlinear optical properties of α -BBO crystals are nonexistent due to the centric symmetry with its crystal structure. α -BBO crystals are not recommended for NLO processes.
|
Basic Properties of a-BBO crystal |
|
|
Transparency Range
|
190~3500nm
|
|
Density
|
3.85 g/cm 2
|
|
Hygroscopic Susceptibility
|
Low
|
|
Mohs Hardness
|
4.5
|
|
Thermal Expansion Coefficients（/CO）
|
-9.3X10-6 （C ）
|
|
-9.5X10-6 （A ）
|
|
|
Damage Threshold
|
1GW
|
|
Refractive Indices
|
No=1.6776，Ne= 1.5534，532nm
No=1.6579，Ne=1.5379，1064nm |
|
Sellmeier Equation (λ in μm)
|
no2 = 2.7471+0.01878/(λ2 -0.01822)-0.01354λ2
ne 2 = 2.37153+0.01224/(λ2 -0.01667)-0.01516λ2 |
Capabilities |
||
|
Material
|
a-BBO Crystal
|
 Transparency Curve
|
|
Size
|
1mm-40mm
|
|
|
Surface Quality
|
10-5
|
|
|
Optical Axis Orientation
|
6 arc min
|
|
|
Parallelism
|
<10 ace sec
|
|
|
Flatness
|
λ/4@633nm
|
|
|
Clear Aperture
|
>90%
|
|
|
Coating
|
AR coating
|
|
|
Mount
|
Upon Customer's Specification
|
|