Pb2Cd(SeO3)(2)X-2 (X = Cl and Br): two halogenated selenites with phase matchable second harmonic generation

Gong Ya-Ping; Hu Chun-Li; Ma Yun-Xiang; Mao Jiang-Gao; Kong Fang

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Pb2Cd(SeO3)(2)X-2 (X = Cl and Br): two halogenated selenites with phase matchable second harmonic generation

机译：PB2CD（SEO3）（2）X-2（X = CL和BR）：两种卤化硒，具有相位匹配的第二次谐波产生

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Two new halogenated selenites, namely, Pb2Cd(SeO3)(2)X-2 (X = Cl and Br), were synthesized via mild hydrothermal reactions. The isomorphic compounds crystallized in a noncentrosymmetric (NCS) and chiral space group. Their three-dimensional (3D) structures were formed by alternating undulated [Pb-2(SeO3)X](infinity)(+) cationic layers and flattened [Cd(SeO3)X](infinity)(-) anionic layers. Thermal analyses revealed that the compounds can remain stable up to 500 degrees C. The SHG efficiencies of Pb2Cd(SeO3)(2)X-2 (X = Cl and Br) are much higher than those of commercial KDP (KH2PO4), and they are phase-matchable. UV-vis-NIR diffuse reflectance spectra revealed that the two compounds exhibited wide optical band gaps. The laser damage thresholds of Pb2Cd(SeO3)(2)X-2 (X = Cl and Br) were measured to be about 38.5 and 35.7 times higher than that of AGS (AgGaS2). Their calculated birefringences were large enough to accomplish phase matching in SHG progression. The SHG density analyses disclosed that the lone pair electrons of the SeO3 and PbOnXm units made major contributions to their nonlinear efficiencies.

机译：通过温和的水热反应合成两种新的卤化硒矿，即Pb2Cd（SeO 3）（2）X-2（x = Cl和Br）。在非浓对称（NCS）和手性空间组中结晶的同构晶体。通过交替的下波的[Pb-2（SeO 3）X]（无穷大）（+）阳离子层和扁平的[Cd（SeO 3）X]（Infinity）（ - ）阴离子层形成它们的三维（3D）结构。热分析显示，化合物可以保持稳定至500℃。PB2CD（SEO3）（2）X-2（X = Cl和BR）的SHG效率远高于商业KDP（KH2PO4），而且它们是相匹配的。 UV-Vis-Nir漫反射光谱显示，两种化合物表现出宽光带间隙。测量Pb2Cd（SeO3）（2）×2（x = Cl和Br）的激光损伤阈值约为约38.5％和35.7倍，高于Ags（Aggas2）。它们计算的双射归足够大，可以在SHG进展中完成相位匹配。 SHG密度分析公开了SEO3和PBBOxM单元的孤立对电子对其非线性效率产生了主要贡献。

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来源
《Inorganic Chemistry Frontiers》 |2019年第11期|共7页
作者
Gong Ya-Ping; Hu Chun-Li; Ma Yun-Xiang; Mao Jiang-Gao; Kong Fang;
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Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

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1. Pb2Cd(SeO3)(2)X-2 (X = Cl and Br): two halogenated selenites with phase matchable second harmonic generation [J] . Gong Ya-Ping, Hu Chun-Li, Ma Yun-Xiang, Inorganic Chemistry Frontiers . 2019,第11期

机译：PB2CD（SEO3）（2）X-2（X = CL和BR）：两种卤化硒，具有相位匹配的第二次谐波产生
2. Pb2TiFO(SeO3)(2)Br: a new polar compound with the strongest second harmonic generation in the selenite bromide family [J] . Liu Lili, Zhang Bingbing, Halasyamani P. Shiv, Journal of Materials Chemistry, C. materials for optical and electronic devices . 2021,第20期

机译：PB2TIFO（SEO3）（2）BR：一种新的极性化合物，具有硒溴家族中最强的第二次谐波产生
3. AGa(3)F(6)(SeO3)(2) (A = Rb, Cs): A New Type of Phase-Matchable Hexagonal Tungsten Oxide Material with Strong Second-Harmonic Generation Responses [J] . Wu Chao, Jiang Xingxing, Lin Lin, Chemistry of Materials: A Publication of the American Chemistry Society . 2020,第16期

机译：AGA（3）F（6）（SEO3）（2）（a = rb，Cs）：一种新型相匹配的六方钨氧化物材料，具有强的二次谐波产生反应
4. Phase-Matched Third Harmonic Generation in Clustered Nanoplasma [C] . Shivani Vij Recent Advances in Fundamental and Applied Sciences Conference . 2017

机译：聚簇纳米纳米型相匹配的第三次谐波产生
5. Second harmonic generation and cascaded second order processes using quasi-phase-matched counter propagating waves. [D] . Landry, Gary Duane. 1998

机译：使用准相位匹配的反向传播波产生二次谐波和级联二阶过程。
6. Synthesis Crystal Structure and Thermal Decomposition of the New Cadmium Selenite Chloride Cd4(SeO3)2OCl2 [O] . Faiz Rabbani, Humayun Ajaz, Iwan Zimmermann, -1

机译：新型亚硒化镉Cd4（SeO3）2OCl2的合成晶体结构和热分解
7. AGa3F6(SeO3)2 (A = Rb, Cs): A New Type of Phase-Matchable Hexagonal Tungsten Oxide Material with Strong Second-Harmonic Generation Responses [O] . -1

机译：AGA3F6（SEO3）2（A = RB，CS）：一种具有强大二次谐波产生反应的新型相匹配的六方钨氧化物材料
8. Atomically Phase-Matched Second-Harmonic Generation in a 2D Crystal. [R] . 2016

机译：二维晶体中的原子相位匹配二次谐波产生。

Pb2Cd(SeO3)(2)X-2 (X = Cl and Br): two halogenated selenites with phase matchable second harmonic generation

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