Patent ID: 9166359
Filing Date: 2015-10-20
Classification: H01S

Abstract:
1. Method for generating a laser beam (FL), comprising: a set of N elementary laser beams (FLE. within said laser oscillator, the phase (φ.1, φ.2, . . . , φ.N) of each of the N elementary laser beams is adjusted so that said elementary laser beams are in phase; and said N elementary laser beams are subsequently aggregated so as to form the laser beam (FL), wherein, so as to adjust the phase of each of the N elementary laser beams, the difference between the phase (φ.1) of an individual elementary laser beam (FLE. 1 ) and the phases (φ.2, . . . , φ.N) of the other N−1 elementary laser beams (FLE. 2 , . . . , FLE.N) is converted into a luminous intensity level (ΔI. 1 ), by means of at least one optical filtering by phase contrast element ( 11 ) through which at least part (FC. 1 , FC. 2 , . . . , FC.N) of each elementary laser beam is directed, wherein the luminous intensity level (ΔI. the phase shift (Δφ.1) thus obtained is applied to said individual elementary laser beam (FLE.