Materials Pushing the Application Limits of Wire Grid Polarizers further into the Deep Ultraviolet Spectral Range
arXiv:1607.04866 · doi:10.1002/adom.201600250
Abstract
Wire grid polarizers (WGPs), periodic nano-optical meta-surfaces, are convenient polarizing elements for many optical applications. However, they are still inadequate in the deep ultraviolet spectral range. We show that to achieve high performance ultraviolet WGPs a material with large absolute value of the complex permittivity and extinction coefficient at the wavelength of interest has to be utilized. This requirement is compared to refractive index models considering intraband and interband absorption processes. We elucidate why the extinction ratio of metallic WGPs intrinsically humble in the deep ultraviolet, whereas wide bandgap semiconductors are superior material candidates in this spectral range. To demonstrate this, we present the design, fabrication and optical characterization of a titanium dioxide WGP. At a wavelength of 193 nm an unprecedented extinction ratio of 384 and a transmittance of 10 % is achieved.
21 pages, Advanced Optical Materials 2016
Cited by in corpus (15)
- Dewetted Au nanoparticles on TiO surfaces -- Evidence of a size-independent plasmonic photo-electrochemical response
- Layered optomagnonic structures: Time Floquet scattering-matrix approach
- Titania-Based Spherical Mie Resonators Elaborated by High-Throughput Aerosol Spray: Single Object Investigation
- Suppressed-scattering windows for radiative cooling applications
- Ultraviolet Mie resonances in computationally discovered boron phosphide nanoparticles
- Exploring Super-Earth Surfaces: Albedo of Near-Airless Magma Ocean Planets and Topography
- Polarimetric investigation of selected cloud compositions in exoplanetary atmospheres
- Key signal contributions in photothermal deflection spectroscopy
- On performance of thin-film meso-structured perovskite solar cell through experimental analysis and device simulation
- Enhanced Surface Second Harmonic Generation in Nanolaminates
- Simultaneous inverse design of materials and parameters of core-shell nanoparticle via deep-learning: Demonstration of dipole resonance engineering
- Probing macroscopic temperature changes with non-radiative processes in hyperbolic meta-antennas
- Tailoring the Spectral and Directional Emissivity of Functionalized Laser Processed Surfaces
- Ultra-Spatiotemporal Light Confinement in Dielectric Nanocavity Metasurfaces
- Absorption and scattering properties of nanoparticles in an absorbing medium: modeling with experimental validation