High Frame-Rate Mid-Infrared SPAD Camera
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866913093493194752 |
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| author | Abelson, Ziv Beitner, Daniel Livne, Ziv Hollander, Eyal Erner, Moshe Cohen Charbon, Edoardo Suchowski, Haim |
| author_facet | Abelson, Ziv Beitner, Daniel Livne, Ziv Hollander, Eyal Erner, Moshe Cohen Charbon, Edoardo Suchowski, Haim |
| contents | Single-photon avalanche diode (SPAD) arrays have transformed optical imaging by enabling photon-counting sensitivity, picosecond resolution, and high frame-rate operation. These capabilities, however, have remained confined to the visible and near-infrared, leaving the mid-infrared, the spectral region hosting the fundamental vibrational signatures of most molecules, largely inaccessible. Here, we demonstrate the first mid-IR SPAD camera by integrating broadband adiabatic frequency upconversion with a 512x512 Silicon SPAD array. This architecture transfers full SPAD functionality to the mid-IR, enabling room-temperature, low-noise, broadband photon-counting imaging. We achieve spectrally resolved mid-IR imaging at frame rates of up to 60,000 frames per second and capture nanosecond-scale laser-induced thermal dynamics via weak mid-IR blackbody emission, revealing spatial-temporal behavior inaccessible to existing technologies. These results establish a scalable platform for photon-resolved, ultrafast thermal and chemical imaging in a spectral range previously inaccessible to high-speed low-light detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_04276 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High Frame-Rate Mid-Infrared SPAD Camera Abelson, Ziv Beitner, Daniel Livne, Ziv Hollander, Eyal Erner, Moshe Cohen Charbon, Edoardo Suchowski, Haim Optics Single-photon avalanche diode (SPAD) arrays have transformed optical imaging by enabling photon-counting sensitivity, picosecond resolution, and high frame-rate operation. These capabilities, however, have remained confined to the visible and near-infrared, leaving the mid-infrared, the spectral region hosting the fundamental vibrational signatures of most molecules, largely inaccessible. Here, we demonstrate the first mid-IR SPAD camera by integrating broadband adiabatic frequency upconversion with a 512x512 Silicon SPAD array. This architecture transfers full SPAD functionality to the mid-IR, enabling room-temperature, low-noise, broadband photon-counting imaging. We achieve spectrally resolved mid-IR imaging at frame rates of up to 60,000 frames per second and capture nanosecond-scale laser-induced thermal dynamics via weak mid-IR blackbody emission, revealing spatial-temporal behavior inaccessible to existing technologies. These results establish a scalable platform for photon-resolved, ultrafast thermal and chemical imaging in a spectral range previously inaccessible to high-speed low-light detection. |
| title | High Frame-Rate Mid-Infrared SPAD Camera |
| topic | Optics |
| url | https://arxiv.org/abs/2605.04276 |