CsLa(SO<sub>4</sub>)<sub>2</sub>: A Lanthanum Sulfate Crystal for Nonlinear Optical Applications
Nonlinear optical materials with ultraviolet transparency are vital for technologies. A sulfate crystal, CsLa(SO<sub>4</sub>)<sub>2</sub>, was synthesized via hydrothermal methods, adopting a noncentrosymmetric structure (<i>Pmn</i>2<sub>1</sub>) with asymmetric La[SO<sub>4</sub>]<sub>7</sub> coordination. The material exhibits a second-harmonic generation efficiency of 0.6 times KH<sub>2</sub>PO<sub>4</sub> (KDP), a birefringence of 0.026 at 546 nm, and a UV cutoff below 200 nm. Its wide bandgap (5.27 eV) aligns with requirements for UV/deep-UV applications. Theoretical analysis suggests that La-O and S-O bonding interactions enhance optical performance, providing insights for optimizing sulfate-based materials.
Authors
- Zhoubin Lin (ORCID: https://orcid.org/0000-0003-3579-8297)
- Feifei Yuan (ORCID: https://orcid.org/0000-0003-1733-5969)
- Lehui Liu (ORCID: https://orcid.org/0000-0001-9079-2096)
- Lizhen Zhang (ORCID: https://orcid.org/0000-0003-4486-4153)
- Yisheng Huang
Institutions
- Chinese Academy of Sciences (CN)
- Fujian Institute of Research on the Structure of Matter (CN)
- Xiamen Tungsten (China) (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-05-23
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c01654
- Citations
- 4
- Primary Topic
- Crystal Structures and Properties
- Type
- article
- Field-Weighted Citation Impact
- 1.71