• Kevin Farley

    Kevin Farley is a scientist at Nufern.

    FIGURE 1. Cladding absorption of 400-μm-clad, Yb-doped fibers at 915 nm as function of core size. Fiber A (green curve) with 0.065 NA is optimized for delivering power with good beam quality. Fiber B (blue curve) with 0.07 NA maximizes cladding absorption for a given core size.
    Kevin Farley
    Jan. 17, 2014
    High powers can be achieved at lower costs by selecting optical fiber that maximizes absorption. However, excellent beam quality with high power and the best cost performance ...
    FIGURE 1. Optical fibers are most commonly based on the double-clad fiber geometry (a), commonly with an octagon-shaped inner cladding to increase pump absorption (b).
    George Oulundsen
    Jan. 1, 2012
    Fiber laser performance at the kilowatt power level has been improved by the careful matching of active and passive fibers, which has led to higher-power operation while maintaining...