Axicon metalens for broadband light harvesting-Reference-Cited by-同舟云学术

Axicon metalens for broadband light harvesting

Published:2023-03-08 Issue:7 Volume:12 Page:1309-1315
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Chang Kai-Hao¹,Chen Yen-Chun²,Huang Yo-Song²,Hsu Wei-Lun²,Lu Guo-Hao³,Liu Chao-Feng³,Weng Chun-Jen³,Lin Yu-Hsin³,Chen Che-Chin³,Lee Chien-Chieh⁴,Chang Yu-Chi¹,Wang Po-Hsiang¹,Wang Chih-Ming²⁴^ORCID

Affiliation:

1. VisEra Technologies Company Limited , Hsinchu , 30078 , Taiwan

2. Department of Optics and Photonics , National Central University , Taoyuan , 320371 , Taiwan

3. National Applied Research Laboratories , Taiwan Instrument Research Institute , 20 R & D, Rd. VI , Hsinchu , 30076 , Taiwan

4. Optical Science Center , National Central University , Taoyuan , 320371 , Taiwan

Abstract

Abstract In this study, an axicon metalens comprising a large central disc surrounded by nanoposts for energy harvesting in composite metal-oxide semiconductor sensors was designed, fabricated, and experimentally characterized. The main role of the central disc is focusing light; the nanoposts of various diameters deflect light to form a Bessel-like beam. The spatial distribution of the optical transmission was measured using micro-hyperspectral imaging. The axicon metalens concentrates the light to the sensitive area of the sensor and also harvests light from adjacent pixels. After adding an axicon metalens, the normalized peak transmission is up to 250% at λ = 700 nm as compared to a blank TiO2 film. The experimental results had fair agreement with the finite-difference-time-domain simulation. The ultra-broadband energy-harvesting performance of the sensor suggests that it could be applied in surveillance and Internet of Things applications.

Funder

Ministry of Science and Technology, Taiwan

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2023-0017/pdf

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