• Steven R. Bowman

    Steven R. Bowman is section head, Advanced Laser Concepts, at the US Naval Research Laboratory.

    FIGURE 1. The energy level diagram is shown for holmium (Ho)-doped glass.
    Bryce Samson
    Aug. 1, 2012
    A 140 W, 2.13 µm mid-infrared (mid-IR) fiber laser operating with 60% slope efficiency is possible using holmium-doped silica fibers operating at the long-wavelength limit of ...