Abstract: The aim of the present description is a system for generating high peak power laser pulses including a light source for emitting initial nanosecond laser pulses, a fiber-based device for conveying laser pulses, including at least one first multimode fiber with a single core, a diffractive optical element and an optical system that generates, from each of said initial laser pulses, a laser pulse, the spatial intensity distribution of which on an input face of said first multimode fiber includes a “top hat” component summed with a speckle pattern. The system further includes a spatial shaping module that transforms a first electric field into a second electric field formed by a sum of N components that are at least partially spatially incoherent with one another, N?2, such that the contrast of said speckle pattern is limited compared to an initial contrast defined without a spatial shaping module.

Abstract: The present description relates, according to one aspect, to a high-peak-power laser pulse generation system (10), comprising at least one first light source (101) for emitting first laser pulses (IL), a fiber device (110) for transporting said first laser pulses, comprising at least one first multimode fiber with a single core designed to receive said first laser pulses, and a module (102) for temporally shaping said first laser pulses, arranged upstream of the fiber device, configured so as to reduce the power spectral density of said pulses by reducing the temporal coherence.

Abstract: The present description relates, according to one aspect, to a high-peak-power laser pulse generation system (10) comprising at least one first light source (101) for emitting first nanosecond laser pulses (IL), a fiber device (110) for transporting said first laser pulses, comprising at least one first multimode fiber with a single core designed to receive said first laser pulses, and at least one first optical amplifier (120) arranged at the output of said fiber device for optically amplifying said first laser pulses in order to form said high-peak-power laser pulses.

Abstract: The present description relates, according to one aspect, to a high-peak-power laser pulse generation system (10), comprising at least one first light source (101) for emitting first laser pulses (IL), a fiber device (110) for transporting said first laser pulses, comprising at least one first multimode fiber with a single core designed to receive said first laser pulses, and a module (102) for temporally shaping said first laser pulses, arranged upstream of the fiber device, configured so as to reduce the power spectral density of said pulses by reducing the temporal coherence.