تقرير
Superluminal Motion-Assisted 4-Dimensional Light-in-Flight Imaging
العنوان: | Superluminal Motion-Assisted 4-Dimensional Light-in-Flight Imaging |
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المؤلفون: | Morimoto, Kazuhiro, Wu, Ming-Lo, Ardelean, Andrei, Charbon, Edoardo |
المصدر: | Phys. Rev. X 11, 011005 (2021) |
سنة النشر: | 2020 |
المجموعة: | Physics (Other) |
مصطلحات موضوعية: | Physics - Optics, Electrical Engineering and Systems Science - Image and Video Processing |
الوصف: | Advances in high speed imaging techniques have opened new possibilities for capturing ultrafast phenomena such as light propagation in air or through media. Capturing light-in-flight in 3-dimensional xyt-space has been reported based on various types of imaging systems, whereas reconstruction of light-in-flight information in the fourth dimension z has been a challenge. We demonstrate the first 4-dimensional light-in-flight imaging based on the observation of a superluminal motion captured by a new time-gated megapixel single-photon avalanche diode camera. A high resolution light-in-flight video is generated with no laser scanning, camera translation, interpolation, nor dark noise subtraction. A machine learning technique is applied to analyze the measured spatio-temporal data set. A theoretical formula is introduced to perform least-square regression, and extra-dimensional information is recovered without prior knowledge. The algorithm relies on the mathematical formulation equivalent to the superluminal motion in astrophysics, which is scaled by a factor of a quadrillionth. The reconstructed light-in-flight trajectory shows a good agreement with the actual geometry of the light path. Our approach could potentially provide novel functionalities to high speed imaging applications such as non-line-of-sight imaging and time-resolved optical tomography. Comment: 7 pages, 4 figures |
نوع الوثيقة: | Working Paper |
DOI: | 10.1103/PhysRevX.11.011005 |
URL الوصول: | http://arxiv.org/abs/2007.09308 |
رقم الأكسشن: | edsarx.2007.09308 |
قاعدة البيانات: | arXiv |
DOI: | 10.1103/PhysRevX.11.011005 |
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