Miniature Cavity-Enhanced Diamond Magnetometer
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-10-27 |
| Journal | Physical Review Applied |
| Authors | Georgios Chatzidrosos, Arne Wickenbrock, Lykourgos Bougas, Nathan Leefer, Teng Wu |
| Institutions | Centre National de la Recherche Scientifique, Lawrence Berkeley National Laboratory |
| Citations | 85 |
Abstract
Section titled āAbstractāWe present a highly sensitive miniaturized cavity-enhanced room-temperature\nmagnetic-field sensor based on nitrogen-vacancy (NV) centers in diamond. The\nmagnetic resonance signal is detected by probing absorption on the 1042\,nm\nspin-singlet transition. To improve the absorptive signal the diamond is placed\nin an optical resonator. The device has a magnetic-field sensitivity of 28\npT/$\sqrt{\rm{Hz}}$, a projected photon shot-noise-limited sensitivity of 22\npT/$\sqrt{\rm{Hz}}$ and an estimated quantum projection-noise-limited\nsensitivity of 0.43 pT/$\sqrt{\rm{Hz}}$ with the sensing volume of $\sim$ 390\n$\mu$m $\times$ 4500 $\mu$m$^{2}$. The presented miniaturized device is the\nbasis for an endoscopic magnetic field sensor for biomedical applications.\n