Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866918050446442496 |
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| author | Audhkhasi, Romil Tara, Virat Klein, Matthew Tang, Andrew Chen, Rui Vangala, Shivashankar Hendrickson, Joshua R. Majumdar, Arka |
| author_facet | Audhkhasi, Romil Tara, Virat Klein, Matthew Tang, Andrew Chen, Rui Vangala, Shivashankar Hendrickson, Joshua R. Majumdar, Arka |
| contents | While recent advances in reconfigurable photonics have provided new avenues for manipulating light on the subwavelength scale, on-demand control of infrared absorption remains elusive. Here, we experimentally demonstrate a plasmonic metasurface based on the phase change material Ge2Sb2Te5 with in-situ electrically-switchable infrared absorption in the 3-5 microns wavelength range. Unlike traditional infrared microstructures based on volatile phase change materials, our device does not require the external stimuli to be continuously applied in order to maintain a given optical state, thus enabling zero static power operation. Furthermore, the 400x deep-subwavelength field localization supported by our device not only allows robust tuning of its spectral response but also makes its absorptivity independent of the angle of incidence, thus enabling a flatband behavior. We conduct switching of our device using rapid thermal annealing and reversible switching using electrical pulses over 26 cycles. Our device provides new avenues for infrared absorption control and serves as a steppingstone for the next generation of mid-wave infrared photonics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07258 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range Audhkhasi, Romil Tara, Virat Klein, Matthew Tang, Andrew Chen, Rui Vangala, Shivashankar Hendrickson, Joshua R. Majumdar, Arka Optics Applied Physics While recent advances in reconfigurable photonics have provided new avenues for manipulating light on the subwavelength scale, on-demand control of infrared absorption remains elusive. Here, we experimentally demonstrate a plasmonic metasurface based on the phase change material Ge2Sb2Te5 with in-situ electrically-switchable infrared absorption in the 3-5 microns wavelength range. Unlike traditional infrared microstructures based on volatile phase change materials, our device does not require the external stimuli to be continuously applied in order to maintain a given optical state, thus enabling zero static power operation. Furthermore, the 400x deep-subwavelength field localization supported by our device not only allows robust tuning of its spectral response but also makes its absorptivity independent of the angle of incidence, thus enabling a flatband behavior. We conduct switching of our device using rapid thermal annealing and reversible switching using electrical pulses over 26 cycles. Our device provides new avenues for infrared absorption control and serves as a steppingstone for the next generation of mid-wave infrared photonics. |
| title | Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2506.07258 |