Non-linear optics, Nonmetal, Transitional

• Ag-Ga-S
• B-K-Nb-O
• Ag-Ga-Se
• Ba-Mo-O-Te
• Cs-Hf-O-W
• non-linear optical properties
• second-harmonic generation
• nonmetal
• transitional
• chalcogen
• non-disordered
• quaternary
• orthorhombic
• tetragonal
• monoclinic
• trigonal
• hexagonal