Optical absorption coefficient - wavenumber diagram

• Ho-O-P-Y
• Al-B-Ho-O-Y
• Na-O-V
• C-Si
• Eu-F-K-Mg
• non-disordered
• chalcogen
• transitional
• nonmetal
• disordered
• cubic
• tetragonal
• trigonal
• orthorhombic
• hexagonal