Omnidirectional and compact transmissive chromatic polarizers based on a dielectric-metal-dielectric structure

Abstract

High-performance omnidirectional transmissive chromatic polarizers based on a one-dimensional dielectric-metal-dielectric subwavelength grating structure are proposed. The incident angle-insensitive properties, azimuthal angle-insensitive properties and polarization features are investigated thoroughly to realize the proposed omnidirectional transmissive chromatic polarizers. The color difference at different angles for the proposed yellow polarizers is less than 0.9746, and the extinction ratio at different angles for the proposed cyan polarizers exceeds 26. Analysis of the power density profiles for the transverse electric (TE) and transverse magnetic (TM) polarizations show that surface plasmon resonance and high refractive index contrast properties lead to excellent polarization features and high angular tolerance.

Angle robust transmitted plasmonic colors with different surroundings utilizing localized surface plasmon resonance

“…[1,2] For thousands of years, these beautiful colors in nature have attracted much attention and the study of artificial colors have never stopped. [3][4][5] In recent years, artificial nanostructures, made up of a subwavelength structure, have been developed as a new way to produce bright structural colors. [6][7][8] The resonance effects excited by the interplays between light and nanostructures can be manipulated to separate the incident white light in either transmitted or reflected systems, resulting in bright structural colors.…”

Nanowell-Based Orthogonal Submicropolarizer Array Biochip for Multiple Throughput of Fluorescence Sequencing

“…Interestingly, illumination via a grating nanostructure has also been employed in fields including optical communications, displays, and imaging systems. For example, visualization through a grating polarizer or pixelated polarizer array provides the orientation direction information on the reflected plane of an object, , eliminates reflections and glare on smooth surfaces, , enhances the contrast of scratches and stains, and helps in analyzing the distortion due to mechanical stress in transparent objects. Additionally, when incorporated with various optical stacks and arrangements, the grating polarizer has realized a dual-view three-dimensional display from one display panel , and a snapshot multispectral camera. , Apart from the pure polarization property at visible light wavelengths with a grating period of smaller than 200 nm, wire grid grating nanostructures have been reported in applications for their additional wavelength selection capability that varies with the grating period, incident angle, and nanostructure materials, including a single metal layer made of silver (Ag), gold (Au), or aluminum (Al) and a sandwich stack of dielectrics and metals. ,− …”