Abstract

Two-pupil systems have been proposed to overcome the limitations in incoherent optical systems¹ and operations such as bandpass filtering have been realized. In this presentation we explore the possibility of realizing bandpass filtering with longitudinal periodicity in a two-pupil interaction system.² By filtering with longitudinal periodicity we mean that spatial filtering in the transverse directions (x, y) is repeated approximately along the longitudinal direction (z) at a periodic distance. This can be achieved by employing Fresnel zone plates in the pupil planes.

© 1989 Optical Society of America