A HOLOGRAPHIC LENSLET ARRAY DEVICE WITH VARIABLE FOCAL POWER

Abstract

A holographic lenslet array device with variable focal power is presented. It consists of two holo-lenslet array components. The i x jth pair of the holo-lenslets between two components forms a channel, which has a symmetrical off-axis configuration formed by a Leith-Upatnieks holo-lenslet and a Brandt holo-lenslet. Because of its variable focal power, it is more flexible than others. It can achieve the function of multi-signal processing, and can be used as array illuminators for the optical parallel interconnect applications.