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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/cm2 |
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 |
Size | 1mm-40mm |
Surface Quality | 10-5 |
Optical Axis Orientation | 6 arc min |
Parallelism | <10 arc sec |
Flatness | λ/4@633nm |
Clear Aperture | >90% |
Coating | AR coating |
Mount | Upon Customer's Specification |
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/cm2 |
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 |
Size | 1mm-40mm |
Surface Quality | 10-5 |
Optical Axis Orientation | 6 arc min |
Parallelism | <10 arc sec |
Flatness | λ/4@633nm |
Clear Aperture | >90% |
Coating | AR coating |
Mount | Upon Customer's Specification |
