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
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