BiB3O6 (BIBO) is a newly developed nonlinear optical crystal. It possesses large effective nonlinear coefficient, high damage threshold and inertness with respect to moisture. Its nonlinear coefficient is 3.5 - 4 times higher than that of LBO, 1.5 -2 times higher than that of BBO. It is a promising doubling crystal to produce blue laser.
Basic Properties:
Crystal Structure |
Monoclinic，Point group 2 |
Lattice Parameter |
a=7.116Å, b=4.993Å , c=6.508Å , β=105.62°, Z=2 |
Melting Point |
726℃ |
Mohs |
5-5.5 |
Density |
5.033 g/cm3 |
Thermal Expansion Coefficient |
αa=4.8 x 10-5/K , αb= 4.4 x 10-6/K, αc=-2.69 x 10-5/K |
Transparency Range |
286- 2500 nm |
Absorption Coefficient |
<0.1%/cm at 1064nm |
SHG of 1064/532nm |
Phase matching angle: 168.9°from Z axis in YZ plan Deff : 3.0 +/- 0.1 pm/V Angular acceptance: 2.32 mrad·cm Walk-off angle : 25.6 mrad Temperature acceptance: 2.17 ℃·cm |
Physical Axis |
X∥b, (Z,a)=31.6°,(Y,c)=47.2° |
Technical Parameters:
• Dimension tolerance: (W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm) (L≥2.5mm)
(W±0.1mm)x(H±0.1mm)x(L+0.1/-0.1mm) (L<2.5mm)
• Clear aperture: central 90% of the diameter
• Flatness: less than λ/8 @ 633nm
• Transmitting wavefront distortion: less than λ/8 @ 633nm
• Chamfer: ≤0.2mmx45°
• Chip: ≤0.1mm
• Scratch/Dig code: better than 10/ 5 to MIL-PRF-13830B
• Parallelism: better than 20 arc seconds
• Perpendicularity: ≤5 arc minutes
• Angle tolerance: △θ≤0.25°, △φ≤0.25°
• Damage threshold[GW/cm2]: >0.3 for 1064nm, TEM00, 10ns, 10HZ