Abstract: The present invention relates to a laser amplification system (1). The system (1) is constituted by a laser light source (2) for providing a main laser beam (LB); a laser light amplifier (3) for amplifying the main laser beam (LB) and apparatus for supplying a bleed laser beam (BO) to the laser radiation amplifier (3). The bleed laser beam (BO) is amplified by the laser radiation amplifier (3) at least when the main laser beam (LB) has a low or zero power valve substantially to prevent super-radiance.