Journal
CHEMICAL SCIENCE
Volume 11, Issue 3, Pages 694-698Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9sc04862f
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Funding
- National Natural Science Foundation of China [21975062, 61835014, 51425206]
- Advanced Talents Incubation Program of the Hebei University [521000981271]
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The design of new beryllium-free deep-ultraviolet nonlinear optical materials is important but challenging. Here, we describe a new strategy to search for such materials based on rational selection of fundamental structural units. By combining asymmetric AlO3F tetrahedra and pi-conjugated B3O6 rings, a new aluminum borate fluoride, CsAlB3O6F was obtained. It exhibits excellent linear and nonlinear optical properties including a high optical transmittance with a cut-off edge shorter than 190 nm, large second harmonic generation intensities (2.0x KH2PO4, KDP), and suitable birefringence for phase-matching under 200 nm. It also has good thermal stability and can be synthesized easily in an open system.
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