Materials Pushing the Application Limits of Wire Grid Polarizers further into the Deep Ultraviolet Spectral Range

Investor logo

Warning

This publication doesn't include Faculty of Sports Studies. It includes Faculty of Science. Official publication website can be found on muni.cz.
Title in English Materiály pro polarizátory z drátěných mřížek posouvající aplikační omezení dále do ultrafialové spektrální oblasti
Authors

SIEFKE Thomas KROKER Stefanie PFEIFFER Kristin PUFFKY Oliver DIETRICH Kay FRANTA Daniel OHLÍDAL Ivan SZEGHALMI Adriana KLEY Ernst-Bernhard TÜNNERMANN Andreas

Year of publication 2016
Type Article in Periodical
Magazine / Source Advanced Optical Materials
MU Faculty or unit

Faculty of Science

Citation
Web http://onlinelibrary.wiley.com/doi/10.1002/adom.201600250/abstract
Doi http://dx.doi.org/10.1002/adom.201600250
Field Optics, masers and lasers
Keywords Wire Grid Polarizers; Dispersion model; Films; Lithography
Description Wire grid polarizers (WGPs), periodic nano-optical metasurfaces, are convenient polarizing elements for many optical applications. However, they are still inadequate in the deep ultraviolet spectral range. It is shown 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. It is elucidated 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, the design, fabrication, and optical characterization of a titanium dioxide WGP are presented. At a wavelength of 193 nm an unprecedented extinction ratio of 384 and a transmittance of 10% is achieved.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info