LASER MARK FORMED INSIDE TRANSPARENT BODIES NEAR THE SURFACE

The invention relates to a method for producing a mark in a transparent body under the surface thereof. According to said invention, the mark is located at least at 500?m below the surface because a layer system, whose destruction threshold is greater than that of a substrate, is applied to a substr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SMOLE, PHILIPP, LANKER, MICHAEL, HEINE-KEMPKENS, CLAUS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COLOUR PRINTING GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LINING MACHINES METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing a mark in a transparent body under the surface thereof. According to said invention, the mark is located at least at 500?m below the surface because a layer system, whose destruction threshold is greater than that of a substrate, is applied to a substrate surface. When the layer system is embodied in the form of a readout wavelength antireflection layer system, a contrast is increased during reading. The embodiment of the layer system in the form of a writing wavelength mirror makes it possible to write with reduced intensity reflection.