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集成的光学探测方案通过局部干扰元表面为芯片级原子磁力仪实现了

Jinsheng Hu^1,2, Zihua Liang^1,2, Peng Zhou^1,2

¹Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China.

Nanophotonics (Berlin, Germany)

|December 16, 2024

概括

研究人员开发了一种芯片规模的光学探测方案,使用超表面为小型化原子传感器. 这种综合方法使得紧的光学磁计 (OPM) 能够用于高分辨率的生物磁性成像.

科学领域:

原子物理学和传感器技术
纳米光子和元材料
生物医学仪器仪表仪器仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪器仪表仪表仪器仪表仪器仪表仪器仪表仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器

背景情况:

光学磁计 (OPM) 对于高空间分辨率的生物磁性成像至关重要.
传统的OPM依赖于重的光学元件,阻碍了微型化和芯片规模集成.
现有的光学探测系统面临着对紧型设备的偏振转换和波纹成形方面的挑战.

研究的目的:

为芯片规模的OPM开发一个集成的光学探测方案.
设计和制造可定制的极化转换和波面操纵的超表面.
为了展示一个紧的,芯片集成的OPM用于生物磁性应用.

主要方法:

开发用于光学探测的局部干扰元表面.
基于的超极化器和超极化器镜片的制造和特征.
将小型蒸汽电池与元极化器集成在一起,构建一个紧的OPM.

主要成果:

超极化器实现了86.29%的传输效率和14.2dB的灭绝比.
超极化镜头显示了72.79%的聚焦效率和6.4dB的灭光率.
紧的OPM实现了~9 fT/Hz^1/2的灵敏度和±2.3 nT的动态范围.

结论:

开发的基于超表面的光学探测方案是芯片规模集成的一个有希望的解决方案.
这项技术有助于为先进的原子设备开发小型化的OPM.
这项研究为芯片集成的具有增强功能的原子传感器铺平了道路.

关键词:

原子磁力计是一种原子磁力计.芯片规模的量子传感器集成的光学探测仪.这是一种超极化器.多功能地表转移器多功能地表转移器

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