β-Barium borate (β-BaB2O4 or BBO) is a nonlinear optical crystal which has been widely used in non-linear optical applications like OPO, OPA, OPCPA and other.
Due to its large spectral transmission range as well as phase matching, BBO crystals have been applied in second, third, fourth or fifth harmonic generations for high power visible/UV sources and optical parametric conversions for high power broadly tunable sources.
Since its broad gain bandwidth overlaps with Ti:Sapphire in 800 nm range, ultra-high power and high contrast laser systems have been built based on the mixed CPA/OPCPA plan.
This article comes from meta-laser edit released