The design of wide-band, sharp cut-off dichroic

Abstract

The design of a double layer low-pass, sharp cut-off dichroic plate with a 2:1 reflection bandwidth is presented. The dichroic plate comprises two layers of Potent Crosses (commonly called Jerusalem Cross) which are supported on thin 10 mil Kevlar sheets. These sheets are bonded to opposite sides of a Kevlar honeycomb core. This construction represents a low loss, thermally stable support structure which has been space qualified.