Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region
Flat lens or metalens, as one of the most important application branches of metasurfaces, has recently been attracting significant research interest. Various reflective and transmissive metalenses have been demonstrated in the terathertz, infrared and visible wavelength range. However, metalens oper...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/11/5/1243 |
| _version_ | 1797534883921264640 |
|---|---|
| author | Huifang Guo Song Yue Ran Wang Yu Hou Man Li Kunpeng Zhang Zichen Zhang |
| author_facet | Huifang Guo Song Yue Ran Wang Yu Hou Man Li Kunpeng Zhang Zichen Zhang |
| author_sort | Huifang Guo |
| collection | DOAJ |
| description | Flat lens or metalens, as one of the most important application branches of metasurfaces, has recently been attracting significant research interest. Various reflective and transmissive metalenses have been demonstrated in the terathertz, infrared and visible wavelength range. However, metalens operating in the ultraviolet (UV) wavelength range is rare. Moreover, the development of reflective UV metalens, the important counterpart of transmissive ones, falls far behind. In this work, with thorough investigation of material properties, we propose a reflective metalens based on silicon dioxide (SiO<sub>2</sub>) and aluminum (Al) that operates in the vacuum ultraviolet (VUV) to visible wavelength region. Four reflective metalenses were designed and optimized for wavelengths of 193, 441, 532 and 633 nm, and prominent focusing capability was observed, especially for the VUV wavelength of 193 nm. Dispersion characteristics of the metalenses were also studied within ±50 nm of the design wavelength, and negative dispersion was found for all cases. In addition, the SiO<sub>2</sub> + Al platform can be, in principle, extended to the mid-infrared (IR) wavelength range. The reflective VUV metalens proposed in this work is expected to propel miniaturization and integration of UV optics. |
| first_indexed | 2024-03-10T11:36:48Z |
| format | Article |
| id | doaj.art-a706444c6e1145e5805589f0b37d8678 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:36:48Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a706444c6e1145e5805589f0b37d86782023-11-21T18:48:14ZengMDPI AGNanomaterials2079-49912021-05-01115124310.3390/nano11051243Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength RegionHuifang Guo0Song Yue1Ran Wang2Yu Hou3Man Li4Kunpeng Zhang5Zichen Zhang6Microelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaMicroelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, 3 Beitucheng West Road, Beijing 100029, ChinaFlat lens or metalens, as one of the most important application branches of metasurfaces, has recently been attracting significant research interest. Various reflective and transmissive metalenses have been demonstrated in the terathertz, infrared and visible wavelength range. However, metalens operating in the ultraviolet (UV) wavelength range is rare. Moreover, the development of reflective UV metalens, the important counterpart of transmissive ones, falls far behind. In this work, with thorough investigation of material properties, we propose a reflective metalens based on silicon dioxide (SiO<sub>2</sub>) and aluminum (Al) that operates in the vacuum ultraviolet (VUV) to visible wavelength region. Four reflective metalenses were designed and optimized for wavelengths of 193, 441, 532 and 633 nm, and prominent focusing capability was observed, especially for the VUV wavelength of 193 nm. Dispersion characteristics of the metalenses were also studied within ±50 nm of the design wavelength, and negative dispersion was found for all cases. In addition, the SiO<sub>2</sub> + Al platform can be, in principle, extended to the mid-infrared (IR) wavelength range. The reflective VUV metalens proposed in this work is expected to propel miniaturization and integration of UV optics.https://www.mdpi.com/2079-4991/11/5/1243metasurfacereflective metalensultravioletsilicon dioxidealuminum |
| spellingShingle | Huifang Guo Song Yue Ran Wang Yu Hou Man Li Kunpeng Zhang Zichen Zhang Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region Nanomaterials metasurface reflective metalens ultraviolet silicon dioxide aluminum |
| title | Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region |
| title_full | Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region |
| title_fullStr | Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region |
| title_full_unstemmed | Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region |
| title_short | Design of Polarization-Independent Reflective Metalens in the Ultraviolet–Visible Wavelength Region |
| title_sort | design of polarization independent reflective metalens in the ultraviolet visible wavelength region |
| topic | metasurface reflective metalens ultraviolet silicon dioxide aluminum |
| url | https://www.mdpi.com/2079-4991/11/5/1243 |
| work_keys_str_mv | AT huifangguo designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT songyue designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT ranwang designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT yuhou designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT manli designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT kunpengzhang designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion AT zichenzhang designofpolarizationindependentreflectivemetalensintheultravioletvisiblewavelengthregion |