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    • Joerg Neukum

    Director of Product Marketing, High Power Diode Lasers at Coherent

    Joerg Neukum is Director of Product Marketing, High Power Diode Lasers at Coherent (Mainz, Germany).

    FIGURE 1. Near-infrared absorption spectrum of Nd:YVO4. For many years, laser designers exclusively targeted pumping the strong peak at 808 nm. The crystal is normally pumped along its b-axis, and the separate plots refer to light polarized to the a- and c-axes.
    Lasers & Sources

    Enhance your Nd-doped DPSS laser with a longer-wavelength pump

    Joerg Neukum
    Jan. 27, 2021
    Laser diode pump modules emitting in a longer wavelength window dramatically lower the thermal load challenges in DPSS lasers, simplifying power scaling.
    (Courtesy of Hellma Materials and Friedrich-Schiller-Universität Jena)
    A Yb3+-doped CaF2 crystal is highly transparent in the visible (colors are caused by antireflection coatings).
    Lasers & Sources

    SOLID-STATE LASERS: Very-large-scale DPSS lasers are coming

    Joerg Neukum
    Oct. 1, 2010
    New alkaline-earth fluoride laser materials and ever-improving diode-laser module technology are bringing very high-energy, moderate- to high-repetition-rate DPSS lasers for research...