Design, Manufacturing and Testing of Dual-Layer Frequency-Selective Subwavelength-Grid Polarizers of Enhanced Performance in THz Band
Abstract
This report results from a contract tasking National University of Ireland Maynooth as follows: Design and testing of dual-layer polarizers requires detailed research. Firstly, the polarizers usually operate in tilted orientation, which is relatively hard to simulate. Secondly, the finite conductivity of wires has to be taken into account, particularly, for tilted grids. Finally, other multi-grid structures (microstrip gratings) have to be analyzed as well (e.g., polarization-sensitive bolometers, whose analysis is needed for computing the ESA Planck telescope beams). A possibility of improving known devices or making new ones by using multi-grid structures (photonic crystals, left-handed meta-materials, etc) was noted long ago. Yet, subwavelength multi-layer grids received insufficient attention. Despite being used as circular polarizers, filters, etc., these grids have not been considered as candidates for linear polarizers. In the meantime, inter-layer resonant effects in co-linear grids should significantly improve their performance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 09, 2009
- Accession Number
- ADA539504
Entities
People
- Vladimir B. Yurchenko
Organizations
- Maynooth University