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    • Andreas Tünnermann

    Andreas Tünnermann is director of the Fraunhofer Institute for Applied Optics and Precision Engineering (Fraunhofer IOF), as well as a professor in physics and director of the Institute of Applied Physics at Friedrich Schiller University (both in Jena, Germany).

    MushroomsArtSeven | iStock / Getty Images Plus | Getty Images
    Detectors & Imaging

    Photodiodes can help save apples and the planet

    Abdel K. Ruvalcaba Perez
    July 11, 2024
    Food loss and waste are serious problems for mankind and for the planet, but low-cost sensors can assess fruit quality along the value chain.
    (Courtesy of Fraunhofer IOF)
    FIGURE 1. Researchers from around the world gathered at the MIMAS Workshop, held at the Fraunhofer IOF in Jena, to develop a roadmap for the advances needed in optical fiber technology.
    Lasers & Sources

    Market Insights: Workshop on next-generation optical fiber technology provides perspectives and a roadmap

    Andreas Thoss
    Jan. 18, 2018
    Workshop in Jena on next-generation optical fiber technology provides perspectives and a roadmap for fiber lasers.
    A team of researchers in Germany has demonstrated 4.3 kW single-mode output from a fiber laser, in which the output was limited only by the input pump power.
    Lasers & Sources

    Fiber Lasers: High-power, single-mode fiber lasers advance

    Thomas Schreiber
    June 12, 2017
    By identifying high-power fiber laser challenges and optimizing the optical fiber accordingly, a 4.3 kW single-mode output has been achieved, with further upscaling and new ultrafast...