α-BBO is a negative uniaxial crystal which has large birefringence over a broad transparent range of 190 nm-3500 nm. α-BBO is an excellent crystal especially in UV and high power applications. The physical, chemical, thermal and optical properties of α-BBO crystal are similar to those of β-BBO. However, the nonlinear optical properties of α-BBO crystal are nonexistent due to the centrical symmetry of its crystal structure. α-BBO crystal is recommended for NLO processes.
Main features:
♦ High UV transmittance
♦ Large birefringence
♦ Low bulk absorption suitable for high power applications
♦ High damage threshold
♦ Stable physical and mechanical properties
We offer：
♦ Different sizes crystals can be customized
♦ Provide professional services
♦ High quality quality assurance
Technical Parameters
| Argument name | Values and Ranges |
| Size tolerance | ±0.1 mm |
| Optical Axis Orientation | ±0.5° |
| Clear aperture | > 90% |
| Surface Quality | 20/10 |
| Flatness | λ/4@633nm |
| Wavefront Distortion | λ/2@633nm |
| Parallelism | < 15 arc sec |
Beam deviation | < 3 arc min |
| Coating | Upon customers' requirements |
| Quality warranty period | 1 year (with normal use) |
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