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Aimed to realize deep-ultraviolet (DUV, λ 8O15H4 (AE = Sr, Ca) screened from the inorganic crystal structure database are obtained in the experiments. Preliminary measurements including powder absorption spectra and SHG effects are in good agreement with our simulation results, well confirming our prediction that AEB8O15H4 (AE = Sr, Ca) would be promising DUV NLO crystals with large band gaps, strong SHG effects, and sufficient birefringence. This work is the first demonstration that hydroxyborates can realize DUV SHG, which may bring new opportunities for finding DUV NLO materials in the hydroxyborate system.
Gong et al. (Wed,) studied this question.