Designing a Beryllium-Free Deep-Ultraviolet Nonlinear Optical Material without a Structural Instability Problem

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• 作者：Sangen Zhao ; Lei Kang ; Yaoguo Shen ; Xiaodong Wang ; Muhammad Adnan Asghar ; Zheshuai Lin ; Yingying Xu ; Siyuan Zeng ; Maochun Hong ; Junhua Luo
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：March 9, 2016
• 年：2016
• 卷：138
• 期：9
• 页码：2961-2964
• 全文大小：342K
• ISSN：1520-5126

文摘

A beryllium-free deep-ultraviolet (deep-UV) nonlinear optical (NLO) material K₃Ba₃Li₂Al₄B₆O₂₀F is developed mainly by the element substitution of Be for Al and Li from Sr₂Be₂B₂O₇ that was considered as one of the most promising deep-UV NLO materials. K₃Ba₃Li₂Al₄B₆O₂₀F preserves the structural merits of Sr₂Be₂B₂O₇ and thus exhibits no layering growth tendency and possesses the optical properties required for deep-UV NLO applications, including deep-UV transparency, phase-matchability, and sufficiently large second-harmonic generation (1.5 × KH₂PO₄). Furthermore, it overcomes the structural instability problem of Sr₂Be₂B₂O₇, which is confirmed by the obtainment of large single crystals and phonon dispersion calculations. These attributes make it very attractive for next-generation deep-UV NLO materials. The substitution of Be for Al and Li in beryllium borates provides a new opportunity to design beryllium-free deep-UV NLO materials with good performance.