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Proceedings Paper

A review of metal mesh filters
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Paper Abstract

The Astronomical Instrumentation Group at Cardiff University has been developing metal mesh optical filters for more than 30 years, which are currently in use in many ground-, balloon- and space-based instruments. Here we review the current state of the art with respect to these quasi-optical components (low-pass, high-pass and band-pass filters, dichroics and beam-dividers) as developed for the FIR and sub-millimetre wavelength region. We compare performance data with various modelling tools (HFSS, transmission line theory or Floquet mode analysis). These models assist with our understanding of the behaviour of these filters when used at non-normal incidence or in the diffraction region of the grid structures. Interesting artefacts, such as the Wood anomalies and behaviour with S and P polarisations, which dictate the usage of these components in polarisation sensitive instruments, will be discussed.

Paper Details

Date Published: 16 June 2006
PDF: 15 pages
Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 62750U (16 June 2006); doi: 10.1117/12.673162
Show Author Affiliations
Peter A. R. Ade, Cardiff Univ. (United Kingdom)
Giampaolo Pisano, Cardiff Univ. (United Kingdom)
Carole Tucker, Cardiff Univ. (United Kingdom)
Samuel Weaver, Cardiff Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 6275:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington; William D. Duncan, Editor(s)

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