β-BBO, discovered by FIRSM of Chinese Academy of Sciences, now is manufactured and marketed by CASTECH. Besides as a NLO crystal for SHG and FOHG, it's also usd in OPO and ultrashort-pulse lasers.

Introduction:

Beta-Barium Borate (β-BaB₂O₄ or BBO), discovered by FIRSM, CAS (Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science), now is manufactured and marked by CASTECH, Ins.(CASTECH).

CASTECH'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 δ_n ≈10^-6/cm;
     •   Wide temperature-bandwidth of about 55℃.

CASTECH offers：
       •   Strict quality control;
       •   Crystal length from 0.005 mm to 25 mm and size up to 15x15x15 mm³;
       •   P-coatings, AR-coatings, mounts and re-polishing services;
       •   A large quantity of crystals in stock;
       •   Fast delivery (10 days for polished only, 15 days for AR-coated).