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NH4Be2BO3F2 and γ‐Be2BO3F: Overcoming the Layering Habit in KBe2BO3F2 for the Next‐Generation Deep‐Ultraviolet Nonlinear Optical Materials
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-06-14 , DOI: 10.1002/anie.201803721 Guang Peng 1, 2 , Ning Ye 1 , Zheshuai Lin 3 , Lei Kang 3 , Shilie Pan 4 , Min Zhang 4 , Chensheng Lin 1 , Xifa Long 1 , Min Luo 1 , Yu Chen 1 , Yu-Huan Tang 1, 2 , Feng Xu 1, 2 , Tao Yan 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-06-14 , DOI: 10.1002/anie.201803721 Guang Peng 1, 2 , Ning Ye 1 , Zheshuai Lin 3 , Lei Kang 3 , Shilie Pan 4 , Min Zhang 4 , Chensheng Lin 1 , Xifa Long 1 , Min Luo 1 , Yu Chen 1 , Yu-Huan Tang 1, 2 , Feng Xu 1, 2 , Tao Yan 1
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KBe2BO3F2 (KBBF) is still the only practically usable crystal that can generate deep‐ultraviolet (DUV) coherent light by direct second harmonic generation (SHG). However, applications are hindered by layering, leading to difficulty in the growth of thick crystals and compromised mechanical integrity. Despite efforts, it is still a great challenge to discover new nonlinear optical (NLO) materials that overcome the layering while keeping the DUV SHG available. Now, two new DUV NLO beryllium borates have been successfully designed and synthesized, NH4Be2BO3F2 (ABBF) and γ‐Be2BO3F (γ‐BBF), which not only overcome the layering but also can be used as next‐generation DUV NLO materials with the shortest type I phase‐matching second‐harmonic wavelength down to 173.9 nm and 146 nm, respectively. Significantly, γ‐BBF is superior to KBBF in all metrics and would be the most outstanding DUV NLO crystal.
中文翻译：
NH4Be2BO3F2和γ-Be2BO3F：克服KBe2BO3F2中下一代深紫外非线性光学材料的分层习惯
KBe 2 BO 3 F 2（KBBF）仍然是唯一可以通过直接二次谐波产生（SHG）产生深紫外（DUV）相干光的晶体。但是，分层会阻碍应用，导致难以生长厚晶体并损害机械完整性。尽管付出了很多努力，但发现新的非线性光学（NLO）材料克服了分层问题，同时又保持了DUV SHG的使用仍然是一个巨大的挑战。现在，已经成功设计并合成了两种新型的DUV NLO铍硼酸盐NH 4 Be 2 BO 3 F 2（ABBF）和γ‐Be 2 BO 3F（γ-BBF）不仅可以克服分层，而且还可以用作下一代DUV NLO材料，其I型相匹配的最短二次谐波波长分别低至173.9 nm和146 nm。值得注意的是，γ-BBF在所有指标上均优于KBBF，并且将是最杰出的DUV NLO晶体。
更新日期：2018-06-14
中文翻译：
NH4Be2BO3F2和γ-Be2BO3F：克服KBe2BO3F2中下一代深紫外非线性光学材料的分层习惯
KBe 2 BO 3 F 2（KBBF）仍然是唯一可以通过直接二次谐波产生（SHG）产生深紫外（DUV）相干光的晶体。但是，分层会阻碍应用，导致难以生长厚晶体并损害机械完整性。尽管付出了很多努力，但发现新的非线性光学（NLO）材料克服了分层问题，同时又保持了DUV SHG的使用仍然是一个巨大的挑战。现在，已经成功设计并合成了两种新型的DUV NLO铍硼酸盐NH 4 Be 2 BO 3 F 2（ABBF）和γ‐Be 2 BO 3F（γ-BBF）不仅可以克服分层，而且还可以用作下一代DUV NLO材料，其I型相匹配的最短二次谐波波长分别低至173.9 nm和146 nm。值得注意的是，γ-BBF在所有指标上均优于KBBF，并且将是最杰出的DUV NLO晶体。
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