Laser-written micro-channel atomic magnetometer
Fuente:
arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917647203958784 |
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| author | Zanoni, Andrea Mouloudakis, Kostas Tayler, Michael C. D. Corrielli, Giacomo Osellame, Roberto Mitchell, Morgan W. Lucivero, Vito Giovanni |
| author_facet | Zanoni, Andrea Mouloudakis, Kostas Tayler, Michael C. D. Corrielli, Giacomo Osellame, Roberto Mitchell, Morgan W. Lucivero, Vito Giovanni |
| contents | We demonstrate a sensitive optically-pumped magnetometer using rubidium vapor and 0.75 amg of nitrogen buffer gas in a sub-mm-width sensing channel excavated by femtosecond laser writing followed by chemical etching. The channel is buried less than 1 mm below the surface of its fused silica host material, which also includes reservoir chambers and micro-strainer connections, to preserve a clean optical environment. Using a zero-field-resonance magnetometry strategy and a sensing volume of 2.25 mm$^3$, we demonstrate a sensitivity of $\approx$ 1 $\mathrm{pT}/\sqrt{\mathrm{Hz}}$ at $10$ Hz. The device can be integrated with photonic structures and microfluidic channels with 3D versatility. Its sensitivity, bandwidth and stand-off distance will enable detection of localized fields from magnetic nanoparticles and \mul NMR samples. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_14345 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Laser-written micro-channel atomic magnetometer Zanoni, Andrea Mouloudakis, Kostas Tayler, Michael C. D. Corrielli, Giacomo Osellame, Roberto Mitchell, Morgan W. Lucivero, Vito Giovanni Quantum Physics Atomic Physics Optics We demonstrate a sensitive optically-pumped magnetometer using rubidium vapor and 0.75 amg of nitrogen buffer gas in a sub-mm-width sensing channel excavated by femtosecond laser writing followed by chemical etching. The channel is buried less than 1 mm below the surface of its fused silica host material, which also includes reservoir chambers and micro-strainer connections, to preserve a clean optical environment. Using a zero-field-resonance magnetometry strategy and a sensing volume of 2.25 mm$^3$, we demonstrate a sensitivity of $\approx$ 1 $\mathrm{pT}/\sqrt{\mathrm{Hz}}$ at $10$ Hz. The device can be integrated with photonic structures and microfluidic channels with 3D versatility. Its sensitivity, bandwidth and stand-off distance will enable detection of localized fields from magnetic nanoparticles and \mul NMR samples. |
| title | Laser-written micro-channel atomic magnetometer |
| topic | Quantum Physics Atomic Physics Optics |
| url | https://arxiv.org/abs/2404.14345 |