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Photonics
Special Issues
Development and Application of Metalenses
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Development and Application of Metalenses

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "New Applications Enabled by Photonics Technologies and Systems".

Deadline for manuscript submissions: closed (10 November 2023) | Viewed by 3360

Special Issue Editors

Dr. Qiang Jiang

E-Mail Website
Guest Editor
Optical Engineering, Beijing Institute of Technology, Beijing, China
Interests: metamaterial; metasurface; photonic crystal; holography
Dr. Cheng Chi

E-Mail Website
Guest Editor
School of Optoelectronics, Beijing Institute of Technology, Beijing, China
Interests: new optical imaging; micro-nano optics; augmented reality display technology; diffractive optics; near-field optics

Special Issue Information

Dear Colleagues,

Optical metalenses—two-dimensional arrays of subwavelength scatterers that can focus light waves—have attract increasing attention in recent years. While realizing the functions of traditional optical lenses, they can also provide novel functions. Therefore, optical metalenses are considered to be able to promote the cost reduction, high performance, integration, and miniaturization of optical systems. This Special Issue focuses on the development of various metalenses (such as achromatic metalenses, wide-angle metalenses, etc.) and their applications in various fields (such as imaging, display, lighting, medical, etc.), in addition to discussing the challenges of the commercialization of metalenses.

Dr. Qiang Jiang
Dr. Cheng Chi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • metasurface
  • metalens
  • achromatic lens

Published Papers (2 papers)

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Research

13 pages, 9356 KiB  
Article
Optically Reconfigurable THz Metamaterial with Switchable Wideband Absorption and Transmission
by Liansheng Wang, Qingge Li, Quanhong Fu, Xueyong Ding, Yuan Wang and Weiren Zhu
Photonics 2023, 10(11), 1253; https://doi.org/10.3390/photonics10111253 - 13 Nov 2023
Cited by 2 | Viewed by 909
Abstract
We present an optically reconfigurable multifunctional metamaterial with switchable wideband absorption and transmission across the THz frequency range. The reconfigurability is achieved by introducing optically active silicon into the resonator of the metamaterial unit which could be effectively modulated through external electrical pumping. [...] Read more.
We present an optically reconfigurable multifunctional metamaterial with switchable wideband absorption and transmission across the THz frequency range. The reconfigurability is achieved by introducing optically active silicon into the resonator of the metamaterial unit which could be effectively modulated through external electrical pumping. When the silicon conductivity reaches 50,000 S/m, the metamaterial shows significant absorption of electromagnetic waves ranging from 3.1 to 10 THz. By reducing the applied external pump power and decreasing the silicon conductivity to 150 S/m, the proposed metamaterial exhibits transmission of the incident waves at 5.12 THz with a transmission coefficient of 61%. The proposed optically reconfigurable metamaterial has the advantages of simple structure, wideband absorption, and switchable between absorption and transmission modes, showing potential applications in stealth, communication, or radar systems. Full article
(This article belongs to the Special Issue Development and Application of Metalenses)
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10 pages, 1727 KiB  
Communication
Wide-Field-of-View Trans-Reflective RGB-Achromatic Metalens for Augmented Reality
by Lingcong Luo, Zhengyang Wang, Juntao Li and Haowen Liang
Photonics 2023, 10(5), 590; https://doi.org/10.3390/photonics10050590 - 18 May 2023
Cited by 2 | Viewed by 1983
Abstract
In recent years, various solutions for augmented reality (AR) head-mounted displays have been proposed. In order to achieve the dual functions of reflective focusing on virtual images and transparency to the real world, the optical design of AR eyepieces is particularly critical. Designs [...] Read more.
In recent years, various solutions for augmented reality (AR) head-mounted displays have been proposed. In order to achieve the dual functions of reflective focusing on virtual images and transparency to the real world, the optical design of AR eyepieces is particularly critical. Designs based on traditional optics still face the problems of huge volume and a limited field of view. Due to their extraordinary phase control ability, portability, easy integration, and other advantages, metalenses have triggered extensive research and found many applications, including providing an innovative solution for AR eyepieces. In this work, we propose a single-layer trans-reflective RGB-achromatic metalens with a large field of view of 90°. The metalens reflects the oblique incident virtual image while maintaining balanced transparency of real-world light. Through simulation, the ability of the metalens to focus light at the wavelengths of 488 nm, 532 nm, and 633 nm with the same focal length and balanced efficiency is validated. Moreover, the metalens is polarization-insensitive to the incident light, thus allowing the elimination of the polarization modulation components, which greatly simplifies the optical structure. Our work demonstrates the great potential of metalenses for AR eyepiece applications. Full article
(This article belongs to the Special Issue Development and Application of Metalenses)
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