DEVICE, LASER SYSTEM AND METHOD FOR COMBINING COHERENT LASER BEAMS

摘要

The invention relates to a device (5) for combining a plurality of coherent laser beams (3.1,..., 3.N), comprising: a splitter unit (4) for splitting an input laser beam (9) into the plurality of coherent laser beams (3.1,..., 3.N), a plurality of phase setting units (6.1,..., 6.N) for setting a phase (δφ_a + Δφ_a) of each of the coherent laser beams (3.1,..., 3.N;), and a beam combination unit (10) for combining the coherent laser beams (3.1,..., 3.N) that emanate from a plurality of grid positions (8.1,..., 8.N) of a grid arrangement (16) to form at least one combined laser beam (12). The beam combination unit (10) has a microlens arrangement (11) with exactly one microlens array (17) for forming the at least one combined laser beam (12). The invention also relates to a laser system (1), comprising: a seed laser source for generating a seed laser beam (2a) and a device (5) as described above, and an associated method for combining a plurality of coherent laser beams (3.1,..., 3.N).