摘要
设计了一种由氮化铝(AlN)基板制成的环形天线板,通过沉金技术在其表面沉积了一层金,旨在将微波磁场有效辐射到金刚石上。AlN天线的谐振频率约为2.87 GHz,适用于便携式集成氮空位(NV)磁力计。实验结果表明,与传统的环氧(FR4)天线板相比,在没有外加磁场的情况下进行光学检测磁共振(ODMR)测量时,荧光强度增加了2倍,归一化ODMR信号的带宽减少了33%。稳定性测试进一步表明,AlN天线的稳定性是FR4天线的4倍。此外,在外加偏置磁场下,AlN天线的灵敏度为2.9 nT√Hz,而FR4天线的灵敏度为8.7 nT√Hz,灵敏度提高了3倍。将AlN天线用于NV集成磁强计中,大幅缩小磁强计本身体积,并提高集成传感器系统的性能指标,从而促进集成的发展。
We have designed a circular antenna plate constructed from an aluminum nitride(AlN)substrate,with a layer of gold deposited on its surface by an immersion technique,designed to efficiently radiate microwave magnetic fields onto a diamond.The AlN antenna exhibits a resonant frequency of approximately 2.87 GHz,making it suitable for portable,integrated nitrogen-vacancy(NV)magnetometers.Experimental results demonstrate a two-times increase in fluorescence intensity and a 33%reduction in the bandwidth of the normalized optically detected magnetic resonance(ODMR)signal,as compared to the conventional epoxy(FR4)antenna plate,when ODMR measurements are conducted in the absence of an applied magnetic field.Stability tests further reveal that the AlN antenna provides four times greater stability than the FR4 antenna.In addition,under an applied bias magnetic field,the sensitivity of the AlN antenna is 2.9 nT√Hz,while the sensitivity of the FR4 antenna is 8.7 nT√Hz,a three-fold improvement in sensitivity.The use of AlN antennas in NV integrated magnetometers facilitates integration by significantly reducing the size of the magnetometer itself and improving the performance metrics of the integrated sensor system.
作者
付江豪
任轩辉
杨应杰
侯琛瑜
张庆礼
马宗敏
FU Jianghao;REN Xuanhui;YANG Yingjie;HOU Chenyu;ZHANG Qingi;MA Zongmin(State Key Laboratory of Widegap Semiconductor Optoelectronic Materials and Technologies,North University of China,Taiyuan 030051,China;Key Lab of Quantum Sensing and Precision Measurement of Shanxi Province,Taiyuan 030051,China;School of Semiconductors and Physics,North University of China,Taiyuan 030051,China;School of Instrument and Electronics,North University of China,Taiyuan 030051,China)
出处
《测试技术学报》
2025年第5期592-598,共7页
Journal of Test and Measurement Technology
基金
国家重点研发计划项目(2023YFB3211202)
国家自然科学基金国际合作与交流资助项目(62220106012)
山西省杰出青年基金资助项目(202103021221007)
山西省量子传感与精密测量重点实验室资助项目(201905D121001)
