Mesh filters for the Mm/Submm atmospheric windows

The set of the band-pass freestanding metal mesh filters was developed for the spectral selection of the windows of the atmospheric transparency. The filter transmissions are more then 80%, the bandwidths are close to the widths of the atmospheric windows. The meshes are very elastic and can be also used as the reflective surfaces in the Fabry-Perot and in the multi-layers band-pass filters.