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人工晶体学报 ›› 2023, Vol. 52 ›› Issue (4): 688-700.

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BaTiO3薄膜的制备及其在电光调制器的应用

任怡静, 马新国, 张锋, 陆晶晶, 张力, 王晗   

  1. 湖北工业大学芯片产业学院,武汉 430068
  • 收稿日期:2022-12-07 出版日期:2023-04-15 发布日期:2023-04-28
  • 通信作者: 马新国,博士,教授。E-mail:maxg@hbut.edu.cn
  • 作者简介:任怡静(1998—),女,山东省人,博士研究生。E-mail:renyij1@163.com
  • 基金资助:
    国家自然科学基金(51472081);结构化学国家重点实验室科学基金(20210028);湖北工业大学绿色工业引领计划杰出青年基金(JCRC2021003)

Preparation of BaTiO3 Thin Film and Its Application in Electro-Optic Modulator

REN Yijing, MA Xinguo, ZHANG Feng, LU Jingjing, ZHANG Li, WANG Han   

  1. School of Chip Industry, Hubei University of Technology, Wuhan 430068, China
  • Received:2022-12-07 Online:2023-04-15 Published:2023-04-28

摘要: BaTiO3凭借其较高的电光系数、优良的压电性质和非线性光学性质,成为制备高性能电光调制器的关键材料。其制备方法、实验条件和衬底的选择等决定了薄膜的质量、生长取向和电光系数等,进而影响电光调制器的传播损耗、半波电压、消光比等性能。本文从电光调制器的工作原理出发,围绕BaTiO3薄膜的制备方法、实验条件和薄膜衬底等,探讨了成膜的取向和质量的影响因素,分析了各个BaTiO3薄膜制备方法的优缺点,论述了波导的结构及参数,并展望了未来优化BaTiO3薄膜制备和波导制作工艺的方向。

关键词: BaTiO3薄膜, 电光调制器, 波导, 电光系数, 化学气相沉积法, 分子束外延法

Abstract: BaTiO3 has become the key materials for the preparation of high-performance electro-optical modulators due to its high electro-optical coefficient, excellent piezoelectric properties and nonlinear optical properties. The quality, growth orientation and electro-optic coefficient of the film are determined by the preparation method, experimental condition and the selection of substrate, and further affecting the propagation loss, half-wave voltage and extinction ratio of the electro-optical modulator. Based on the working principle of electro-optical modulator, the factors affecting the orientation and quality of film forming were discussed by focusing on the preparation methods, experimental conditions and film substrates of BaTiO3 thin film in this paper. The advantages and disadvantages of each process of BaTiO3 thin film preparation were analyzed, the structure and performance of waveguide were discussed. Finally, the direction of optimizing BaTiO3 thin film fabrication and waveguide fabrication process in the future were summarized in this paper.

Key words: BaTiO3 thin film, electro-optic modulator, waveguide, electro-optic coefficient, chemical vapor deposition method, molecular beam epitaxy method

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