Quantum Diamond Microscope for Narrowband Magnetic Imaging with High Spatial and Spectral Resolution
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914987104010240 |
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| author | Yin, Zechuan Tang, Jiashen Hart, Connor A. Blanchard, John W. Xiang, Xinyan Satyajit, Saipriya Bhalerao, Smriti Tao, Tao DeVience, Stephen J. Walsworth, Ronald L. |
| author_facet | Yin, Zechuan Tang, Jiashen Hart, Connor A. Blanchard, John W. Xiang, Xinyan Satyajit, Saipriya Bhalerao, Smriti Tao, Tao DeVience, Stephen J. Walsworth, Ronald L. |
| contents | The quantum diamond microscope (QDM) is a recently developed technology for near-field imaging of magnetic fields with micron-scale spatial resolution. In the present work, we integrate a QDM with a narrowband measurement protocol and a lock-in camera; and demonstrate imaging of radiofrequency (RF) magnetic field patterns produced by microcoils, with spectral resolution $\approx1$\,Hz. This RF-QDM provides multi-frequency imaging with a central detection frequency that is easily tunable over the MHz-scale, allowing spatial discrimination of both crowded spectral peaks and spectrally well-separated signals. The present instrument has spatial resolution $\approx2\,\mathrm{μm}$, field-of-view $\approx300\times300\,\mathrm{μm^2}$, and per-pixel sensitivity to narrowband fields $\sim{1}\,$nT$\cdot$Hz$^{-1/2}$. Spatial noise can be reduced to the picotesla scale by signal averaging and/or spatial binning. The RF-QDM enables simultaneous imaging of the amplitude, frequency, and phase of narrowband magnetic field patterns at the micron-scale, with potential applications in real-space NMR imaging, AC susceptibility mapping, impedance tomography, analysis of electronic circuits, and spatial eddy-current-based inspection. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_15450 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum Diamond Microscope for Narrowband Magnetic Imaging with High Spatial and Spectral Resolution Yin, Zechuan Tang, Jiashen Hart, Connor A. Blanchard, John W. Xiang, Xinyan Satyajit, Saipriya Bhalerao, Smriti Tao, Tao DeVience, Stephen J. Walsworth, Ronald L. Optics Instrumentation and Detectors Quantum Physics The quantum diamond microscope (QDM) is a recently developed technology for near-field imaging of magnetic fields with micron-scale spatial resolution. In the present work, we integrate a QDM with a narrowband measurement protocol and a lock-in camera; and demonstrate imaging of radiofrequency (RF) magnetic field patterns produced by microcoils, with spectral resolution $\approx1$\,Hz. This RF-QDM provides multi-frequency imaging with a central detection frequency that is easily tunable over the MHz-scale, allowing spatial discrimination of both crowded spectral peaks and spectrally well-separated signals. The present instrument has spatial resolution $\approx2\,\mathrm{μm}$, field-of-view $\approx300\times300\,\mathrm{μm^2}$, and per-pixel sensitivity to narrowband fields $\sim{1}\,$nT$\cdot$Hz$^{-1/2}$. Spatial noise can be reduced to the picotesla scale by signal averaging and/or spatial binning. The RF-QDM enables simultaneous imaging of the amplitude, frequency, and phase of narrowband magnetic field patterns at the micron-scale, with potential applications in real-space NMR imaging, AC susceptibility mapping, impedance tomography, analysis of electronic circuits, and spatial eddy-current-based inspection. |
| title | Quantum Diamond Microscope for Narrowband Magnetic Imaging with High Spatial and Spectral Resolution |
| topic | Optics Instrumentation and Detectors Quantum Physics |
| url | https://arxiv.org/abs/2406.15450 |