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Grating Links Catalogue Definitions Specifications Equations OEM Links OEM Products Gratings Spectrographs Monochromators Detectors Assemblies Design See Also Gold Coated Gratings Table 14a, Dielectric Gratings for Laser Chirped Pulse Compression In comparrison with gold coated gratings, dielectric gratings present: Higher efficiency (98%) Higher damage threshold   The Grooves are engraved into the multilayer coating Low index layer : SiO2 High index layer : HfO2 Measured performances at LULI (France) Diffraction efficiency : E better than 98% Damage Threshold : Fmax better than 1.7 Jcm-2 @ i = 72.5deg (Femto second pulse) Fmax better than 0.51 Jcm-2 on the gratings Output Energy Gain : Factor 3 improvement in comparison with gold coated gratings

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