在单晶酸在绝缘体上的薄膜薄膜中周期域反转
Pragati Aashna1, Hong-Lin Lin1, Yu Cao1
1Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|September 19, 2024
概括
研究人员在单晶酸 (BTO) 薄膜中实现了电场周期抛光. 这一突破使在集成光子设备中的增强非线性光学过程中实现准相匹配.
科学领域:
- 材料科学 材料科学 材料科学
- 光子学 是一个光子学.
- 晶体学 晶体学是指结晶学.
背景情况:
- 酸 (BTO) 呈现出显著的光学非线性.
- 以前的BTO薄膜是多晶的,限制了非线性工艺的效率.
- 准相匹配 (QPM) 对于高效的非线性光学至关重要.
研究的目的:
- 在单晶BTO薄膜中实现电场周期抛光.
- 在基于BTO的光子设备中实现准相匹配 (QPM).
- 推进BTO在光子应用中的整合.
主要方法:
- 脉冲激光沉积 (PLD) 用于BTO薄膜生长在dysprosium扫描基板上.
- 用作电场抛光的底部电极的氨酸.
- 用X射线衍射 (XRD) 和压力响应力显微镜进行薄膜表征.
- 断片力显微镜和扫描电子显微镜 (SEM) 用于抛光质量评估.
主要成果:
- 证明了BTO薄膜的成功单晶,单域生长.
- 实现了高质量,均和稳定的定期抛光.
- 波林显示出50%的使用周期,周期从2μm到10μm.
结论:
- 首次实现单晶BTO薄膜的电场周期抛光.
- 这一成就是实现BTO光子设备中QPM的关键一步.
- 能够实现高效的非线性光学过程,为集成的BTO光子学铺平道路.
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