Nonlinear optical (NLO) crystals are essential materials for generation of coherent UV light in solid state lasers. KBBF is the only material that can achieve coherent light below 200 nm by direct second harmonic generation (SHG). However, its strong layer habits and the high toxicity of the beryllium oxide powders required for synthesis limit its application. By substituting Be with Zn and connecting adjacent [Zn2BO3O2] ∞ layers by B3O6 groups, a new UV nonlinear optical material, Cs3Zn6B9O 21, was synthesized. It overcomes the processing limitations of KBBF and exhibits the largest SHG response in the KBBF family.
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Technical Institute of Physics and Chemistry of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, 40-1 South Beijing Road, Urumqi 830011, China
Yu, Hongwei,Wu, Hongping,Pan, Shilie,et al. Cs3Zn6B9O21: A Chemically Benign Member of the KBBF Family Exhibiting the Largest Second Harmonic Generation Response[J]. Journal of the American Chemical Society,2014,136(4):1264-1267.