Electrically tunable total reflection of light by oblique helicoidal cholesteric
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916204448317440 |
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| author | Iadlovska, Olena S. Thapa, Kamal Rajabi, Mojtaba Mrukiewicz, Mateusz Shiyanovskii, Sergij V. Lavrentovich, Oleg D. |
| author_facet | Iadlovska, Olena S. Thapa, Kamal Rajabi, Mojtaba Mrukiewicz, Mateusz Shiyanovskii, Sergij V. Lavrentovich, Oleg D. |
| contents | An oblique helicoidal state of a cholesteric liquid crystal (ChOH) is capable of continuous change of the pitch P in response to an applied electric field. Such a structure reflects 50% of the unpolarized light incident along the ChOH axis in the electrically tunable band determined by P/2. Here we demonstrate that at an oblique incidence of light, ChOH reflects 100% of light of any polarization. This singlet band of total reflection is associated with the full pitch P. We also describe the satellite P/2, P/3, and P/4 bands. The P/2 and P/4 bands are triplets while P/3 band is a singlet caused by multiple scatterings at P and P/2. A single ChOH cell acted upon by an electric field tunes all these bands in a very broad spectral range, from ultraviolet to infrared and beyond, thus representing a structural color device with enormous potential for optical and photonic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_08768 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electrically tunable total reflection of light by oblique helicoidal cholesteric Iadlovska, Olena S. Thapa, Kamal Rajabi, Mojtaba Mrukiewicz, Mateusz Shiyanovskii, Sergij V. Lavrentovich, Oleg D. Optics Soft Condensed Matter An oblique helicoidal state of a cholesteric liquid crystal (ChOH) is capable of continuous change of the pitch P in response to an applied electric field. Such a structure reflects 50% of the unpolarized light incident along the ChOH axis in the electrically tunable band determined by P/2. Here we demonstrate that at an oblique incidence of light, ChOH reflects 100% of light of any polarization. This singlet band of total reflection is associated with the full pitch P. We also describe the satellite P/2, P/3, and P/4 bands. The P/2 and P/4 bands are triplets while P/3 band is a singlet caused by multiple scatterings at P and P/2. A single ChOH cell acted upon by an electric field tunes all these bands in a very broad spectral range, from ultraviolet to infrared and beyond, thus representing a structural color device with enormous potential for optical and photonic applications. |
| title | Electrically tunable total reflection of light by oblique helicoidal cholesteric |
| topic | Optics Soft Condensed Matter |
| url | https://arxiv.org/abs/2404.08768 |