Fabrication of an array illuminator using tandem Michelson interferometers

Recently interferometric methods have been proposed for generation of arrays of equal intensity light spots. Double wedge plate interferometer and Michelson interferometers in tandem are used as array generators. However, there interferometric methods have poor light efficiency and low level of concentration of energy in addition to being bulky. We propose that a phase element realized by recording the cross interference pattern using Michelson interferometers in tandem on a photographic plate and subsequently bleaching it, can be used as a new type of array generator. The performance of such an element as an array generator is studied.