Borate, Chalcogen, Nonmetal, Optical properties, Trigonal

• B-Ba-O
• B-Ge-La-O
• B-O
• B-Ba-Na-O
• B-Ba-Eu-Gd-O
• luminescence
• non-linear optics
• second-harmonic generation
• phonons
• refractive index
• metalloid
• nonmetal
• chalcogen
• borate
• non-disordered