Abstract

The electro-optic crystal holds great promise for extensive applications in optoelectronics and optical communication. However, the discovery of novel electro-optic crystals is sporadic due to the difficulties of large-sized crystal growth for electro-optic coefficient measurement. Herein, to address this issue, a high-efficacy evaluation method using accessible powder samples is proposed in which the second-harmonic-generation effect, infrared reflectance spectrum and Raman spectrum are introduced to predict the magnitude of the electro-optic coefficient. The calculated electro-optic coefficients of numerous reported electro-optic crystals through this approach give universal agreement to the experimental values, evidencing the validity of the strategy. Based on this method, CsLiMoO₄ is screened as a novel potential electro-optic crystal and a high-quality crystal is grown by the Czochralski technique for electro-optic coefficient measurement using the half-wave voltage method, the result of which is also comparable to the calculated value. Consequently, the evaluation strategy presented here will pave a new way to explore promising electro-optic crystals efficiently.

中文翻译：

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一种用于电光晶体高效评价的粉末法

摘要

电光晶体在光电子学和光通信中具有广泛的应用前景。然而，由于电光系数测量的大尺寸晶体生长困难，新型电光晶体的发现是零星的。在此，针对这一问题，提出了一种使用可及粉末样品的高效评估方法，其中引入二次谐波产生效应、红外反射光谱和拉曼光谱来预测电光系数的大小。通过这种方法计算出的众多报道的电光晶体的电光系数与实验值一致，证明了该策略的有效性。基于这种方法，CsLiMoO ₄筛选为新型电位电光晶体，采用直拉技术生长出优质晶体，采用半波电压法测量电光系数，其结果也与计算值相当。因此，这里提出的评估策略将为有效探索有前途的电光晶体铺平道路。