Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators
Abstract Cholesteric liquid crystals exhibit a periodic helical structure that partially reflects light with wavelengths comparable to the period of the structure, thus performing as a one-dimensional photonic crystal. Here, we demonstrate a combined experimental and numerical study of light transmi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-43912-2 |
| _version_ | 1797559806841585664 |
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| author | Jaka Zaplotnik Urban Mur Deepshika Malkar Amid Ranjkesh Igor Muševič Miha Ravnik |
| author_facet | Jaka Zaplotnik Urban Mur Deepshika Malkar Amid Ranjkesh Igor Muševič Miha Ravnik |
| author_sort | Jaka Zaplotnik |
| collection | DOAJ |
| description | Abstract Cholesteric liquid crystals exhibit a periodic helical structure that partially reflects light with wavelengths comparable to the period of the structure, thus performing as a one-dimensional photonic crystal. Here, we demonstrate a combined experimental and numerical study of light transmittance spectra of finite-length helical structure of cholesteric liquid crystals, as affected by the main system and material parameters, as well as the corresponding eigenmodes and frequency eigenspectra with their Q-factors. Specifically, we have measured and simulated transmittance spectra of samples with different thicknesses, birefringences and for various incident light polarisation configurations as well as quantified the role of refractive index dispersion and the divergence of the incident light beam on transmittance spectra. We identify the relation between transmittance spectra and the eigenfrequencies of the photonic eigenmodes. Furthermore, we present and visualize the geometry of these eigenmodes and corresponding Q-factors. More generally, this work systematically studies the properties of light propagation in a one-dimensional helical cholesteric liquid crystal birefringent profile, which is known to be of interest for the design of micro-lasers and other soft matter photonic devices. |
| first_indexed | 2024-03-10T17:50:29Z |
| format | Article |
| id | doaj.art-03cf14b4c453453a86808bdf88f8f393 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T17:50:29Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-03cf14b4c453453a86808bdf88f8f3932023-11-20T09:22:18ZengNature PortfolioScientific Reports2045-23222023-10-0113111410.1038/s41598-023-43912-2Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonatorsJaka Zaplotnik0Urban Mur1Deepshika Malkar2Amid Ranjkesh3Igor Muševič4Miha Ravnik5Faculty of Mathematics and Physics, University of LjubljanaFaculty of Mathematics and Physics, University of LjubljanaDepartment of Condensed Matter Physics, Jožef Stefan InstituteDepartment of Condensed Matter Physics, Jožef Stefan InstituteFaculty of Mathematics and Physics, University of LjubljanaFaculty of Mathematics and Physics, University of LjubljanaAbstract Cholesteric liquid crystals exhibit a periodic helical structure that partially reflects light with wavelengths comparable to the period of the structure, thus performing as a one-dimensional photonic crystal. Here, we demonstrate a combined experimental and numerical study of light transmittance spectra of finite-length helical structure of cholesteric liquid crystals, as affected by the main system and material parameters, as well as the corresponding eigenmodes and frequency eigenspectra with their Q-factors. Specifically, we have measured and simulated transmittance spectra of samples with different thicknesses, birefringences and for various incident light polarisation configurations as well as quantified the role of refractive index dispersion and the divergence of the incident light beam on transmittance spectra. We identify the relation between transmittance spectra and the eigenfrequencies of the photonic eigenmodes. Furthermore, we present and visualize the geometry of these eigenmodes and corresponding Q-factors. More generally, this work systematically studies the properties of light propagation in a one-dimensional helical cholesteric liquid crystal birefringent profile, which is known to be of interest for the design of micro-lasers and other soft matter photonic devices.https://doi.org/10.1038/s41598-023-43912-2 |
| spellingShingle | Jaka Zaplotnik Urban Mur Deepshika Malkar Amid Ranjkesh Igor Muševič Miha Ravnik Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators Scientific Reports |
| title | Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators |
| title_full | Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators |
| title_fullStr | Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators |
| title_full_unstemmed | Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators |
| title_short | Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators |
| title_sort | photonic eigenmodes and transmittance of finite length 1d cholesteric liquid crystal resonators |
| url | https://doi.org/10.1038/s41598-023-43912-2 |
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