SGoptics’s BBO is featured by　 
•Broad phase matchable range from 409.6 nm to 3500 nm;
•Wide transmission region from 190 nm to 3500 nm;
•Large effective second-harmonic-generation (SHG) coefficient about 6 times greater than that of KDP
crystal;
•High damage threshold;
•High optical homogeneity with n 10-6/cm;
•Wide temperature-bandwidth of about 55C.
SGoptics  Warranty on BBO 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% or the diameter  
No visible scattering paths or centers when inspected by a 50mW green Laser
  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: ≤20 arc seconds
Perpendicularity:≤5 arc minutes
Angle tolerance:≤0.25°
Damage threshold[GW/cm2]:
>1 for 1064nm,TEM00,10ns,10HZ  (polished  only),
>0.5 for 1064nm,TEM00,10ns,10HZ(AR-coated) ;
>0.3 for 532nm,TEM00,10ns,10HZ(AR-coatd) 
  Quality Warranty Period: one year under proper use.