Amplitude Technologies

Imagine Optic

Gilles Riboulet

Xavier Levecq

Federico Canova

Luc Vigroux

Pierre Mary Paul

Method for shielding a high-power laser apparatus (S) in which a laser beam is generated and then amplified in at least a first amplification stage, including spatial filtering () of the amplified laser beam, phase correction () carried out on the laser beam before it is spatially filtered, and a measurement of the aberrations () on the laser beam. The phase of the beam is corrected so as to produce a beam having minimal aberrations after spatial filtering. The shielding device (D, D') implementing this method may in particular be employed in apparatus using an intense laser beam of high (terawatt) peak power and in proton therapy units.

Method and device for shielding a high-power laser apparatus and high-power-laser optical system employing such a device

A device for amplifying high-energy ultrashort light pulses, includes a generator (), a first amplifying/time-stretching element () including a time-stretching element (), a regenerative amplifier (), a multipass amplifier () and a compressor (). The device further includes a second amplifying/time-stretching element (), arranged at the output of the generator (), amplifying and time-stretching the initial light pulses () to generate amplified and time-stretched pulses (), and a filtering element () arranged between the second amplifying/time-stretching element () and the amplification unit (), blocking the low-amplitude light signals () of the amplified and time-stretched pulses ().

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Morsang sur Orge, France

Gilles Riboulet