3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture
Abstract Terahertz (THz) lens constitutes a vital component in the THz system. Metasurfaces-based THz metalenses and classical bulky lenses are severely constrained by chromatic/ spherical aberration and the diffraction limit. Consequently, achromatic super-resolution THz lenses are urgently needed....
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55624-w |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841559234686222336 |
|---|---|
| author | Jin Chen Shao-Xin Huang Ka Fai Chan Geng-Bo Wu Chi Hou Chan |
| author_facet | Jin Chen Shao-Xin Huang Ka Fai Chan Geng-Bo Wu Chi Hou Chan |
| author_sort | Jin Chen |
| collection | DOAJ |
| description | Abstract Terahertz (THz) lens constitutes a vital component in the THz system. Metasurfaces-based THz metalenses and classical bulky lenses are severely constrained by chromatic/ spherical aberration and the diffraction limit. Consequently, achromatic super-resolution THz lenses are urgently needed. In this study, through translating the required phase distribution into a refractive index (RI) profile with a specific thickness, an innovative approach to designing THz metalenses is proposed and achieved by dielectric gradient metamaterials. The samples fabricated by 3D printing can realize achromatic super focusing with a numerical aperture (NA) of 0.555 from 0.2 to 0.9 THz. Submillimeter features separated by approximately 0.2 mm can be resolved with high precision, such as glass fabric patterns within FR4 panels and fibrous tissue on leaves, with a field of view (FOV) of 90°. Our approach offers a feasible and cost-effective means to implement THz super-resolution imaging, which holds great potential in non-destructive testing and biomedical imaging. |
| format | Article |
| id | doaj-art-adad82d0e9984d04b73f24ce8a3313f5 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-adad82d0e9984d04b73f24ce8a3313f52025-01-05T12:40:34ZengNature PortfolioNature Communications2041-17232025-01-011611910.1038/s41467-024-55624-w3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical apertureJin Chen0Shao-Xin Huang1Ka Fai Chan2Geng-Bo Wu3Chi Hou Chan4State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong KongState Key Laboratory of Terahertz and Millimeter Waves, City University of Hong KongState Key Laboratory of Terahertz and Millimeter Waves, City University of Hong KongState Key Laboratory of Terahertz and Millimeter Waves, City University of Hong KongState Key Laboratory of Terahertz and Millimeter Waves, City University of Hong KongAbstract Terahertz (THz) lens constitutes a vital component in the THz system. Metasurfaces-based THz metalenses and classical bulky lenses are severely constrained by chromatic/ spherical aberration and the diffraction limit. Consequently, achromatic super-resolution THz lenses are urgently needed. In this study, through translating the required phase distribution into a refractive index (RI) profile with a specific thickness, an innovative approach to designing THz metalenses is proposed and achieved by dielectric gradient metamaterials. The samples fabricated by 3D printing can realize achromatic super focusing with a numerical aperture (NA) of 0.555 from 0.2 to 0.9 THz. Submillimeter features separated by approximately 0.2 mm can be resolved with high precision, such as glass fabric patterns within FR4 panels and fibrous tissue on leaves, with a field of view (FOV) of 90°. Our approach offers a feasible and cost-effective means to implement THz super-resolution imaging, which holds great potential in non-destructive testing and biomedical imaging.https://doi.org/10.1038/s41467-024-55624-w |
| spellingShingle | Jin Chen Shao-Xin Huang Ka Fai Chan Geng-Bo Wu Chi Hou Chan 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture Nature Communications |
| title | 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture |
| title_full | 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture |
| title_fullStr | 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture |
| title_full_unstemmed | 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture |
| title_short | 3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture |
| title_sort | 3d printed aberration free terahertz metalens for ultra broadband achromatic super resolution wide angle imaging with high numerical aperture |
| url | https://doi.org/10.1038/s41467-024-55624-w |
| work_keys_str_mv | AT jinchen 3dprintedaberrationfreeterahertzmetalensforultrabroadbandachromaticsuperresolutionwideangleimagingwithhighnumericalaperture AT shaoxinhuang 3dprintedaberrationfreeterahertzmetalensforultrabroadbandachromaticsuperresolutionwideangleimagingwithhighnumericalaperture AT kafaichan 3dprintedaberrationfreeterahertzmetalensforultrabroadbandachromaticsuperresolutionwideangleimagingwithhighnumericalaperture AT gengbowu 3dprintedaberrationfreeterahertzmetalensforultrabroadbandachromaticsuperresolutionwideangleimagingwithhighnumericalaperture AT chihouchan 3dprintedaberrationfreeterahertzmetalensforultrabroadbandachromaticsuperresolutionwideangleimagingwithhighnumericalaperture |