Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface
The potential of terahertz (THz) imaging implementation in a large variety of applications requires compact, reliable, and relatively low-cost solutions in systems constituents. Here we focus on the development of passive optical elements and demonstrate flexible and reliable THz beam profile engine...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2023.1196726/full |
| _version_ | 1797833095806713856 |
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| author | Rusnė Ivaškevičiūtė-Povilauskienė Vladislovas Čižas Ernestas Nacius Ignas Grigelionis Karolis Redeckas Matas Bernatonis Sergej Orlov Gintaras Valušis Gintaras Valušis Linas Minkevičius Linas Minkevičius |
| author_facet | Rusnė Ivaškevičiūtė-Povilauskienė Vladislovas Čižas Ernestas Nacius Ignas Grigelionis Karolis Redeckas Matas Bernatonis Sergej Orlov Gintaras Valušis Gintaras Valušis Linas Minkevičius Linas Minkevičius |
| author_sort | Rusnė Ivaškevičiūtė-Povilauskienė |
| collection | DOAJ |
| description | The potential of terahertz (THz) imaging implementation in a large variety of applications requires compact, reliable, and relatively low-cost solutions in systems constituents. Here we focus on the development of passive optical elements and demonstrate flexible and reliable THz beam profile engineering for imaging aims via mechanical bending of a stainless steel-based C-shaped metasurface. The designed and laser-ablation technology fabricated metasurface provides compact THz focusing and enables THz light engineering as well as polarization control ability in THz imaging. Focusing, light profile engineering, and polarization control performances of the metasurfaces with different focal distances and C-shape designs are presented. Experimental data are well supported by simulations, using Finite Difference Time Domain (FDTD) method. THz images of different objects at ∼94 GHz using InP Gunn diode, bow-tie sensors, and exclusively metasurfaces-based optics are exposed. Further routes in the development of low-cost multicolor and polarization-sensitive THz imaging are discussed. |
| first_indexed | 2024-04-09T14:18:10Z |
| format | Article |
| id | doaj.art-20079d48d3e2449a8941dcc5e4812a7f |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-09T14:18:10Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-20079d48d3e2449a8941dcc5e4812a7f2023-05-05T05:10:40ZengFrontiers Media S.A.Frontiers in Physics2296-424X2023-05-011110.3389/fphy.2023.11967261196726Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurfaceRusnė Ivaškevičiūtė-Povilauskienė0Vladislovas Čižas1Ernestas Nacius2Ignas Grigelionis3Karolis Redeckas4Matas Bernatonis5Sergej Orlov6Gintaras Valušis7Gintaras Valušis8Linas Minkevičius9Linas Minkevičius10Department of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Fundamental Research, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Fundamental Research, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Physics, Institute of Photonics and Nanotechnology, Vilnius University, Vilnius, LithuaniaDepartment of Optoelectronics, Center for Physical Sciences and Technology, Vilnius, LithuaniaDepartment of Physics, Institute of Photonics and Nanotechnology, Vilnius University, Vilnius, LithuaniaThe potential of terahertz (THz) imaging implementation in a large variety of applications requires compact, reliable, and relatively low-cost solutions in systems constituents. Here we focus on the development of passive optical elements and demonstrate flexible and reliable THz beam profile engineering for imaging aims via mechanical bending of a stainless steel-based C-shaped metasurface. The designed and laser-ablation technology fabricated metasurface provides compact THz focusing and enables THz light engineering as well as polarization control ability in THz imaging. Focusing, light profile engineering, and polarization control performances of the metasurfaces with different focal distances and C-shape designs are presented. Experimental data are well supported by simulations, using Finite Difference Time Domain (FDTD) method. THz images of different objects at ∼94 GHz using InP Gunn diode, bow-tie sensors, and exclusively metasurfaces-based optics are exposed. Further routes in the development of low-cost multicolor and polarization-sensitive THz imaging are discussed.https://www.frontiersin.org/articles/10.3389/fphy.2023.1196726/fullterahertzimagingmetasurfacescompact imaging systemsmechanical bendinglight profile engineering |
| spellingShingle | Rusnė Ivaškevičiūtė-Povilauskienė Vladislovas Čižas Ernestas Nacius Ignas Grigelionis Karolis Redeckas Matas Bernatonis Sergej Orlov Gintaras Valušis Gintaras Valušis Linas Minkevičius Linas Minkevičius Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface Frontiers in Physics terahertz imaging metasurfaces compact imaging systems mechanical bending light profile engineering |
| title | Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface |
| title_full | Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface |
| title_fullStr | Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface |
| title_full_unstemmed | Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface |
| title_short | Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface |
| title_sort | flexible terahertz optics light beam profile engineering via c shaped metallic metasurface |
| topic | terahertz imaging metasurfaces compact imaging systems mechanical bending light profile engineering |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2023.1196726/full |
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