Terahertz Microscopy Through Complex Media
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866912153154355200 |
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| author | Kumar, Vivek Cecconi, Vittorio Cutrona, Antonio Peters, Luke Olivieri, Luana Gongora, Juan S. Totero Pasquazi, Alessia Peccianti, Marco |
| author_facet | Kumar, Vivek Cecconi, Vittorio Cutrona, Antonio Peters, Luke Olivieri, Luana Gongora, Juan S. Totero Pasquazi, Alessia Peccianti, Marco |
| contents | Manipulating broadband fields in scattering media is a modern challenge across photonics and other wave domains. Recent studies have shown that complex propagation in scattering media can be harnessed to manipulate broadband light wave packets in space-time for focusing, imaging, and computing applications. Interestingly, while many proposed methodologies operate on intensity-based assessment of scattered fields, often in the spectral domain, from a pure transmission-function perspective, scattering operates as a linear field-level combinatory process, i.e., the superposition of transformation of unit excitations. As a result, we recently demonstrated that gaining experimental access to instantaneous scattered fields, as available through time-domain spectroscopy in the terahertz spectral range, in conjunction with sparse light excitation typical of ghost imaging, provides a key advantage in enabling the functionalisation of scattering, exposing a novel modelling paradigm. In this paper, we provide experimental proof of reconstructing 1-dimensional object features through a scattering medium using a fully broadband time-domain terahertz approach. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_06427 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Terahertz Microscopy Through Complex Media Kumar, Vivek Cecconi, Vittorio Cutrona, Antonio Peters, Luke Olivieri, Luana Gongora, Juan S. Totero Pasquazi, Alessia Peccianti, Marco Optics Manipulating broadband fields in scattering media is a modern challenge across photonics and other wave domains. Recent studies have shown that complex propagation in scattering media can be harnessed to manipulate broadband light wave packets in space-time for focusing, imaging, and computing applications. Interestingly, while many proposed methodologies operate on intensity-based assessment of scattered fields, often in the spectral domain, from a pure transmission-function perspective, scattering operates as a linear field-level combinatory process, i.e., the superposition of transformation of unit excitations. As a result, we recently demonstrated that gaining experimental access to instantaneous scattered fields, as available through time-domain spectroscopy in the terahertz spectral range, in conjunction with sparse light excitation typical of ghost imaging, provides a key advantage in enabling the functionalisation of scattering, exposing a novel modelling paradigm. In this paper, we provide experimental proof of reconstructing 1-dimensional object features through a scattering medium using a fully broadband time-domain terahertz approach. |
| title | Terahertz Microscopy Through Complex Media |
| topic | Optics |
| url | https://arxiv.org/abs/2412.06427 |