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  • BIBO

  • 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. The top-seeded solution growth (TSSG) technique is used at CASTECH for the growth of BIBO single crystals.
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CASTECH offers:

   •   Strict quality control;
   •   Large crystal size up to 10x10x15mm3 ;
   •   AR-coating, mounts and repolishing services;
   •   Fast delivery
.

 

Table 1. Chemical and Structural 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 Hardness 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

 

 

Table 2. Optical and Nonlinear Optical Properties

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°

 

Sellmeier coefficients ni2(λ) = A + B/(λ2-C) - Dλ2 (λ in μm)
  A B C D
n1 3.6545(4) 0.0511(2) 0.0371(3) 0.0226(1)
n2 3.0740(3) 0.0323(1) 0.0316(3) 0.01337(6)
n3 3.1685(3) 0.0373(1) 0.0346(3) 0.01750(8)

 

CASTECH's Warranty on BIBO Specifications :

      •   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
      •   Quality Warranty Period: one year under proper use.

 

 

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