CsAlB3O6F: a beryllium-free deep-ultraviolet nonlinear optical material with enhanced thermal stability

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 π-conjugated B3O6 rings,...

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Bibliographic Details
Published in:Chemical science (Cambridge) 2020, Vol.11 (3), p.694-698
Main Authors: Liu, Hongkun, Wang, Ying, Zhang, Bingbing, Yang, Zhihua, Pan, Shilie
Format: Article
Language:English
Subjects:
Aluminum
Birefringence
Chemistry
Crystallography
Materials selection
Nonlinear optics
Open systems
Optical materials
Optical properties
Optics
Phase matching
Potassium phosphates
Second harmonic generation
Tetrahedra
Thermal stability
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Summary: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 π-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 (2.0× 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.
ISSN:2041-6520
2041-6539
DOI:10.1039/c9sc04862f