Four UV Transparent Linear and Nonlinear Optical Materials Explored from Pure Selenite Compounds

• DOI: 10.1002/adom.202301426
• Publication Date: 2023-09-01T14:18:05Z
• Authors: Peng‐Fei Li; Ya‐Ping Gong; Chun‐Li Hu; Bo Zhang; Jiang‐Gao Mao; Fang Kong
• Keywords: Optical materials

Abstract UV nonlinear optical materials require the simultaneous achievement of a large second harmonic generation (SHG) coefficient (≥1 × KH 2 PO 4 (KDP), d ij > 0.39 pmV −1 ), wide bandgap ( λ < 300 nm, E g 4.2 eV), and moderate birefringence (0.05‐0.10@1064 nm) in single structure. Therefore, designing with excellent comprehensive performance is challenging task. Herein, four transparent selenite are successfully obtained, namely, Al (SeO 3 ) (H O) (1), Ga (2), NaGa (HSeO 6 (3), Cd 5 10 (4), through rational design screening pure system. (1) (2) balanced properties, exhibiting SHG responses (1.2 1.1 KDP), appropriate (0.084 0.076@1064 nm), bandgaps (5.5 5.3 eV). Such largest reported (NLO) materials. This work further demonstrates that good candidate for NLO