Basic characteristics and applications:
• Crystal Structure: tetragonal, a = b = 0.712 nm c = 0.629 nm
• Density: 4.22 g/cm³
• Refractive Indices: n_o=1.9573, n_e=2.1652 @ 1064nm
   n_o=1.9721, n_e=2.1858 @ 808nm
   n_o=2.0210, n_e=2.2560 @ 532nm
• Er³⁺ Concentration: up to 5.0 at. % (other concentrations by request)
• Yb³⁺ Concentration: up to 5.0 at. % (other concentrations by request)
• Possible Linear Size: to 10.0 mm (round/square)
• Possible Linear Size: up to 10 mm
• Size Tolerance: 0.1 mm
• Parallelism: 10”
• Surface Quality: 10/5 s/d
• Flatness: /10
• Damage Threshold: 1 GW/cm²