DILAS Diodenlaser GmbHDILAS Diodenlaser GmbH produces its HLD laser diode series in different versions to pump solid-state lasers in CW or pulsed mode, as well as for direct laser operation. Applications include surface treatment and welding of metals and plastics, and hard and soft soldering of metals. Stacked InGaAlAs quantum-well diode bars are built up with 790- to 810-nm or 930- to 950-nm wavelengths. 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