A powder method for the high-efficacy evaluation of electro-optic crystals |
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Authors: | Feng Xu Ge Zhang Min Luo Guang Peng Yu Chen Tao Yan Ning Ye |
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Affiliation: | Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;University of the Chinese Academy of Sciences, Beijing 100049, China;Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, China |
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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. |
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Keywords: | electro-optic crystals powder crystals high-efficacy evaluation method electro-optic coefficients |
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