基于两极化多重复合元表面的原子共磁力仪的线性到圆形交叉极化差异检测
Kun Huang1,2,3,4,5,6, Xu Xiao1,2,3,4,5,6, Zhibo Cui1,2,3,4,5,6
1School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, 100191, China. zhenchai@buaa.edu.cn.
Nanoscale horizons
|January 21, 2026
概括
我们开发了一种用于原子共磁力计的新型超表面,使小型化,高灵敏度的磁场传感成为可能. 这种极化多重复合装置集成了光束分裂和极化操纵,用于先进的导航和物理应用.
科学领域:
- 光子学和纳米技术的使用.
- 原子物理学和传感的探测
- 光学计量学 在光学计量学
背景情况:
- 原子共磁力计对于在导航和基本物理中高精度磁场传感至关重要.
- 传统的光学检测模块由于体积庞大的组件限制了小型化.
- 现有的超表面往往会通过同质偏振束分裂引入噪声和损失.
研究的目的:
- 提出并演示一个极化多重复合的超表面,用于在原子共磁力计中微型光学检测.
- 通过使差异检测成为可能,克服同质偏振光束分裂的局限性.
- 推进纳米光子与原子传感技术的整合.
主要方法:
- 在化上制造相位编码的无形元原子.
- 设计一个具有双重功能区域的超表面:偏振保持偏振器 (PRD) 和偏振转换偏振器 (PCD).
- 实现线性到圆性的偏振差检测方案.
主要成果:
- 超表面在795nm时实现了超过80%的传导率.
- 在PRD和PCD区域,曲角度与理论值偏差小于1.5%.
- 在70 kHz的光学旋转灵敏度为5.9184 × 10-6 rad,其厚度为微米级.
结论:
- 开发的极化多重复合的超表面使得芯片规模的原子共磁计成为可能.
- 这种方法显著提高了集成能力,并减少了光学噪声.
- 为先进的原子传感技术建立了一个新的范式.
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