Improving infra-red polarized imaging efficiency in a bilayer wire-grid polarizer

Abstract

The optical, plasmonic, and imaging performance of the infra-red polarized system exceeds conventional infra-red detector due to its high resolution and precision. The wire-grid polarizer has a large potential for...

A polarization-dependent perfect absorber with high Q-factors enabled by Tamm phonon polaritons in hyperbolic materials

“…Polarization-dependent absorbers have recently attracted great interest from researchers because they can effectively utilize polarization to actively regulate light absorption and have potential application prospects in fields such as polarization imaging, 19–24 high contrast polarizers, 25,26 polarization sensing 27,28 and optical radars. 29 To date, the majority of such studies employed nanostructures with symmetry-broken unit cells to implement polarization-dependent absorbers.…”

“…[10][11][12] However, the polarization-insensitive absorber cannot capture polarization information, which needs to be further improved in the fields of optical sensing, 13,14 photodetection 15,16 and optical communication. 17,18 Polarization-dependent absorbers have recently attracted great interest from researchers because they can effectively utilize polarization to actively regulate light absorption and have potential application prospects in fields such as polarization imaging, [19][20][21][22][23][24] high contrast polarizers, 25,26 polarization sensing 27,28 and optical radars. 29 To date, the majority of such studies employed nanostructures with symmetry-broken unit cells to implement polarization-dependent absorbers.…”

Wide-angle high-performance polarizers based on all-elliptical-metamaterial one-dimensional photonic crystals

“…However, this kind of polarizers can only work in narrow angle ranges (nearby the Brewster angles) [23][24][25]. To achieve wide-angle high-performance polarizers, researchers proposed a series of twodimensional (2D) and three-dimensional (3D) nanostructures, including wire-grid gratings [26][27][28][29], metasurfaces [30][31][32][33][34] and helix arrays [35][36][37][38]. However, fabrication of 2D and 3D nanostructures operating at optical wavelengths generally requires lithography, which greatly increases the complexity and cost of fabrication [39,40].…”