Frequency-Tunable and Circularly Polarized Microwave Resonator for Magnetic Sensing With NV Ensembles in Diamond
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2020-03-02 |
| Journal | IEEE Sensors Journal |
| Authors | Heng Yuan, Xiaoying Yang, Ning Zhang, Zhiqiang Han, Lixia Xu |
| Institutions | Ministry of Industry and Information Technology, Zhejiang Lab |
| Citations | 6 |
Abstract
Section titled “Abstract”A microwave (MW) resonator to provide frequency-tunable and circularly polarized MW fields is proposed. This technology enlarges the range of application in optically detected magnetic resonance (ODMR) systems based on the diamond negatively charged nitrogen-vacancy (NV) center and enable the selective excitation of its electronic spins. The characteristics of this resonator are simulated and discussed via a series of experimental studies. An adjustable MW frequency (f <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>MW</sub> ) can be provided in the 2.5-3.1GHz range and the value of the input return loss (S11) corresponding to f <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>MW</sub> measures <; -15 dB which mean at least 96.84% coupling efficiency between the microwave resonator and the microwave source. When f <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>MW </sub> is equal to the resonance frequency of the NV center (f <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>NV</sub> ) for different external magnetic fields (B), the results of the ODMR experiment indicate that the fluorescence increases upon an increase in |B|. Finally, the resonator provides a circularly polarized MW output with a purity of 97.17%. This study paves the way to novel applications and to the development of magnetic sensing devices based on the NV ensemble in diamond.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2007 - Microstrip resonator for circularly polarized microwaves