The Manufacture Of Blazed Zone Plates Using A Fabry Perot Interferometer

Blazed zone plates have been manufactured by recording in photoresist the circular fringes transmitted by a Fabry Perot Interferometer. The fringe pattern is scanned through one order by an axial translation of one of the mirrors and a series of exposures is recorded in such a way that a triangular groove profile is generated. Their numerical aperture is limited by the properties of the camera used to photograph the fringes and this limits the range of application of the technique.