| 摘要 |
PCT No. PCT/EP90/00865 Sec. 371 Date Mar. 18, 1991 Sec. 102(e) Date Mar. 18, 1991 PCT Filed May 30, 1990 PCT Pub. No. WO90/15348 PCT Pub. Date Dec. 13, 1990.In order to improve an attenuator for a laser beam of a high-power laser comprising a diffraction element which in an attenuating position extends in a section oriented transversely to a beam direction of the laser beam and is irradiated by the laser beam such that it will also withstand the laser beams of high-power lasers, it is proposed that the diffraction element extend beyond the laser beam in the direction transverse to the beam direction so only a partial region of the diffraction element is irradiated by the laser beam and that the diffraction element be continuously moveable in this direction by a drive such that the laser beam irradiates constantly changing partial regions of the diffraction element.
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