Arrangement for producing beams with variable phase relationships has diffractive delay generator with diffractive optical elements with which any phase difference between sub-beams can be achieved

摘要

The arrangement divides a wave emanating from a radiation source into several sub-beams with the aid of a beam divider arrangement. The beam divider arrangement is a diffractive delay generator (3) with at least two diffractive optical elements (1,2) arranged in sequence to form a beam divider with which any phase difference between sub-beams can be achieved by varying the distance between them : An independent claim is also included for the following: (a) method of producing beams with variable phase relationships.