ARGENTUM SELENOGALLATE AgGaSe2 (AGSe)

Chemical formula: AgGaSe₂
Symmetry: -42m
Density (g/cm³): 5.8
Mohs hardness: 3.5
Transparency range (μm): 0.76 – 18
Optical damage threshold (MW/cm²): 13 (2000 nm, 30 ns)
Refractive index: n_o – 2.5925, n_e – 2.5594 (10.5 μm)
Nonlinear coefficients (pm/V): d₃₆ = 39.5 @10.6 μm

Surface quality: 30/20 (scratch/dig)
Flatness: λ/4 (546 nm)
Parallelism: < 40”