Fourier optical processing enables new capabilities in diamond magnetic imaging
arXiv:1705.09241 · doi:10.1103/PhysRevApplied.8.054003
Abstract
Diamond-based magnetic field sensors have attracted great interest in recent years. In particular, wide-field magnetic imaging using nitrogen-vacancy (NV) centers in diamond has been previously demonstrated in condensed matter, biological, and paleomagnetic applications. Vector magnetic imaging with NV ensembles typically requires an applied field (>10 G) to separate the contributions from four crystallographic orientations, hindering studies of magnetic samples that require measurement in low or independently specified bias fields. Here we decompose the NV ensemble magnetic resonance spectrum without such a bias field by modulating the collected light at the microscope's Fourier plane. In addition to enabling vector magnetic imaging at arbitrarily low fields, our method can be used to extend the dynamic range at a given bias field. As demonstrated here, optically-detected diamond magnetometry stands to benefit from Fourier optical approaches, which have already found widespread utility in other branches of photonics.
arXiv comment40 pages, 11 figures
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Cited by in corpus (9)
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- Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
- Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers
- Hamiltonian Engineering with Constrained Optimization for Quantum Sensing and Control
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