New BGGSe crystals

High optical damage threshold (110 MW/cm2)
Wide spectral transparency range (from 0.5 to 18 μm)
High nonlinearity (d11 = 66 ± 15 pm/V)
Typically applied in frequency conversion of laser radiation into (or within) the mid-IR range
Most efficient crystal for second harmonic generation ofCO- and CO2-laser radiation
Broadband two-stage frequency conversion of multi-line CO-laser radiation in this crystal is possible within 2.5-9.0 μm wavelength range with higher efficiency than in ZnGeP2 and AgGaSe2 crystals.