Nonlocal, Flat Band Meta-optics for Monolithic, High Efficiency, Compact Photodetectors
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866914914495365120 |
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| author | Choi, Minho Munley, Christopher Froech, Johannes E. Chen, Rui Majumdar, Arka |
| author_facet | Choi, Minho Munley, Christopher Froech, Johannes E. Chen, Rui Majumdar, Arka |
| contents | Miniaturized photodetectors are becoming increasingly sought-after components for a range of next generation technologies, such as autonomous vehicles, integrated wearable devices, or gadgets embedded in the Internet of Things. A major challenge, however, lies in shrinking the device footprint, while maintaining high efficiency. This conundrum can be solved by realizing non-trivial relation between the energy and momentum of photons, such as dispersion-free angle-independent devices, known as flat bands. Here, we leverage flat band meta-optics to simultaneously achieve critical absorption over a wide range of incidence angles. For a monolithic silicon meta-optical photodiode, we achieved ~10-fold enhancement in the photon-to-electron conversion efficiency. Such enhancement over a large angular range of ~36 degrees allows incoming light to be collected via a large aperture lens and focused on a compact photodiode, potentially enabling high-speed and low-light operation. Our research unveils new possibilities for creating compact and efficient optoelectronic devices with far-reaching impact on various applications, including augmented reality and light detection and ranging. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_05395 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Nonlocal, Flat Band Meta-optics for Monolithic, High Efficiency, Compact Photodetectors Choi, Minho Munley, Christopher Froech, Johannes E. Chen, Rui Majumdar, Arka Optics Applied Physics Miniaturized photodetectors are becoming increasingly sought-after components for a range of next generation technologies, such as autonomous vehicles, integrated wearable devices, or gadgets embedded in the Internet of Things. A major challenge, however, lies in shrinking the device footprint, while maintaining high efficiency. This conundrum can be solved by realizing non-trivial relation between the energy and momentum of photons, such as dispersion-free angle-independent devices, known as flat bands. Here, we leverage flat band meta-optics to simultaneously achieve critical absorption over a wide range of incidence angles. For a monolithic silicon meta-optical photodiode, we achieved ~10-fold enhancement in the photon-to-electron conversion efficiency. Such enhancement over a large angular range of ~36 degrees allows incoming light to be collected via a large aperture lens and focused on a compact photodiode, potentially enabling high-speed and low-light operation. Our research unveils new possibilities for creating compact and efficient optoelectronic devices with far-reaching impact on various applications, including augmented reality and light detection and ranging. |
| title | Nonlocal, Flat Band Meta-optics for Monolithic, High Efficiency, Compact Photodetectors |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2312.05395 |