Request InfoLEW Techniques Ltd.L.E.W. Techniques Ltd. offers copper tungsten packages for high-power laser diode manufacturers. Copper tungsten can be joined to other metals, such as kovar and alumina, using various solder/braze techniques to form miniature heat sinks and subcarriers. The company says that the packages can be machined to tight tolerances and that the addition of a kovar carrier and metallized ceramics allows laser welding and flexibility for interconnect and test. The devices exhibit thermal expansion of 6.5 to 8.3 ppm/K and thermal conductivity of 175 to 200 W/mK.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra June 2023 IssueCO2 Laser Focusing LensesLaser Research Optics’ CO2 zinc selenide (ZnSe) laser focusing lenses are designed for 10.6-µm, 200-W to 400-kW steel cutting lasers that cut heavy steel fabrications. 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