Device for modulating a laser beam and method for modulating a laser beam

A device for modulating a laser beam, comprising:

• a deformable mirror (2) provided with:
• a reflective surface (21), which is adapted to receive an incident laser beam (101) emitted by a laser source (92) and to reflect a corresponding reflected laser beam (102) provided with an output wavefront (FU);
• an actuator (22) operatively associated with said reflective surface (21) and actuatable for deforming said reflective surface (21) in order to control the output wavefront (FU) of said reflected laser beam (102);
• a detection system (3), which comprises:
• an electromagnetic radiation source (31) adapted to emit a control beam (311) incident on
• said reflective surface (21), wherein said reflective surface (21) is adapted to reflect a corresponding reflected control beam (312);
• a wavefront sensor (32), which is placed to intercept said reflected control beam (312) in order to detect measurements of wavefront of said reflected control beam (312) and generate corresponding measurement signals (Sm);
• a logic control unit (4), which is in data connection with said wavefront sensor (32) in order to receive said measurement signals (Sm), is arranged for associating said measurement signals (Sm) with corresponding forms of the output wavefront (FU) of said reflected laser beam (102), is operatively connected to said actuator (22) in order to actuate said actuator (22) to deform said reflective surface (21) in order to feedback control forms of the output wavefront (FU) of said reflected laser beam (102).