DEVICE FOR GENERATING LASER PULSES AMPLIFIED BY OPTICAL FIBERS WITH PHOTONIC LAYERS

摘要

The invention relates to a device for generating amplified laser pulses comprising at least one pulse laser driven by at least one triggering means emitting a spatially multiplexed master laser beam into elementary laser beams which are amplified in parallel by at least two optical amplifiers. each of the amplified elementary laser beams being directed to a single focusing volume. According to the invention, each optical amplifier (12) comprises a photonic layer fiber (2), at least one laser diode optical pumping means (3, 5) producing at least one pump wave (4) for longitudinal pumping of said fiber and a means for focusing (7) in the focusing volume the amplified beam (15) produced by the fiber, the elongated silica or glass fiber having a doped core, the pumping of each optical amplifier being continuous and the generation amplified optical pulses being obtained directly by the pulsed laser, said device having a configuration of the multiplexing, the parallel amplification and the focusing of each beam making it possible to guarantee the synchronization of the optical pulses produced by the set of optical fiber amplifiers so that they arrive according to a predetermined temporal sequencing in the focusing volume.