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- Title
Investigation of a broadband and polarization-insensitive optical absorber based on closed-ring resonator.
- Authors
Hu, Dan; Wang, Hong-Yan; Zhu, Qiao-Fen; Zhang, Xi-Wei; Tang, Zhen-Jie
- Abstract
A broadband and polarization-insensitive optical metamaterial absorber (MA) based on the refractory metal chromium (Cr) closed-ring resonator is theoretically investigated. The semiconducting silicon dioxide (SiO thin film is introduced as the space layer in this sandwiched structure. Utilizing the symmetrical geometry of the proposed MA structure, polarization insensitivity of the broadband absorption is gained. The simulation results show that the absorber with Cr closed-ring array obtains an average absorption of 99.25% from 400nm to 900nm, covering the total visible wavelength range. This compact design may have potential applications in solar energy harvesting, thermal imaging, and emissivity control.
- Subjects
POLARIZATION (Electricity); LIGHT absorption; METAMATERIALS; CHROMIUM; HEAT resistant alloys
- Publication
Journal of Nonlinear Optical Physics & Materials, 2016, Vol 25, Issue 3, p-1
- ISSN
0218-8635
- Publication type
Article
- DOI
10.1142/S0218863516500326