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首页> 外文期刊>Chemistry of Materials: A Publication of the American Chemistry Society >RbIO3 and RbIO2F2: Two Promising Nonlinear Optical Materials in Mid-IR Region and Influence of Partially Replacing Oxygen with Fluorine for Improving Laser Damage Threshold
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RbIO3 and RbIO2F2: Two Promising Nonlinear Optical Materials in Mid-IR Region and Influence of Partially Replacing Oxygen with Fluorine for Improving Laser Damage Threshold

机译：RbIO3和RbIO2F2：中红外区域中的两种有希望的非线性光学材料，以及用氟部分替代氧气以提高激光损伤阈值的影响

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摘要

Laser damage threshold (LDT) has been considered as a key index, apart from the nonlinear optical (NLO) effect, to characterize the performance of a mid-infrared NLO material. This paper reports and compares the properties of RbIO3 and RbIO2F2 as potential nonlinear optical (NLO) materials to be used in the mid-IR region. RbIO3 is a known compound, and its powder SHG (second harmonic generation) effect is carefully measured in this work for the first time to be as strong as 20 times that of KDP, and its powders show a high damage threshold (LDT) of 125 MW/cm(2). In order to investigate the influence on the properties by partially replacing oxygen with fluorine atoms, the new compound RbIO2F2 is synthesized and characterized. Although it also shows relatively strong powder SHG responses 4 times that of KDP, the LDT value of the powders is improved to 156 MW/cm(2). The transparent region and the thermal stability of two compounds are also measured with satisfactory results. The electronic structure and the properties of the materials are also investigated by the theoretical approach. All these indicate that RbIO3 and RbIO2F2 are both promising candidates for NLO materials to be used in the mid-IR region and that partially replacing oxygen with fluorine in the molecule can improve the laser damage threshold of the material.
机译：除非线性光学（NLO）效应外，激光损伤阈值（LDT）已被视为关键指标，以表征中红外NLO材料的性能。本文报告并比较了RbIO3和RbIO2F2作为在中红外区域中使用的潜在非线性光学（NLO）材料的特性。 RbIO3是一种已知化合物，在这项工作中首次仔细测量了其粉末SHG（二次谐波生成）效果，使其达到KDP的20倍，并且其粉末显示出125的高损伤阈值（LDT） MW / cm（2）。为了研究通过用氟原子部分取代氧对性能的影响，合成并表征了新的化合物RbIO2F2。尽管它也显示出相对较强的粉末SHG响应，是KDP的4倍，但粉末的LDT值提高到156 MW / cm（2）。还测量了两种化合物的透明区和热稳定性，结果令人满意。还通过理论方法研究了材料的电子结构和性能。所有这些表明，RbIO3和RbIO2F2都是用于中红外区域的NLO材料的有希望的候选者，并且用分子中的氟部分取代氧可以提高材料的激光损伤阈值。

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