Exploiting an optical cavity that folds space in time in a conventional lens design provides a novel route for time-resolved imaging and depth sensing.
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Gigan, S. Folding photography in the time domain. Nature Photon 12, 502–503 (2018). https://doi.org/10.1038/s41566-018-0245-x
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DOI: https://doi.org/10.1038/s41566-018-0245-x
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