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The article reports that researchers at the University of Stuttgart in Germany recently created a stacked splitring metamaterial for the optical wavelength range. This breakthrough may eventually lead to and reach beyond Duke University's work. Harald Giessen's research group at the University of Stuttgart designed and manufactured a three-dimensional optical infrared metamaterial with a fabrication process that involves planarization, lateral alignment and a layer-by-layer stacking approach.

Reports on German researchers' development of a fiber laser with optical output of 1.3 kW. Overall slope efficiency; Development of a novel multiclad fiber design; Stability of the laser output; Potential applications.