METHOD FOR PRODUCING A CONTINUOUS DIFFRACTIVE OPTICAL ELEMENT, APPARATUS FOR CARRYING OUT THE PRODUCTION METHOD, AND CONTINUOUS DIFFRACTIVE OPTICAL ELEMENT

In one aspect, a method for producing a diffractive optical element for beam shaping of a laser beam having a first wavelength of at least 100 nm includes providing a laser mirror, the laser mirror having a layered structure made of a substrate, a dielectric layer and optionally an absorption layer,...

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Bibliographische Detailangaben
Hauptverfasser:	WEITZ, Martin, DUNG, David, WAHL, Christian
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	In one aspect, a method for producing a diffractive optical element for beam shaping of a laser beam having a first wavelength of at least 100 nm includes providing a laser mirror, the laser mirror having a layered structure made of a substrate, a dielectric layer and optionally an absorption layer, the dielectric layer resting against the substrate or the absorption layer being located between the substrate and the dielectric layer. The method also includes creating a plurality of bulges of the dielectric layer by treating the laser mirror with a series of focused heating laser beams having a second wavelength (λ2), the plurality of bulges having a height perpendicular to the dielectric layer, and at least one bulge having a height of at least half the first wavelength (λ1).