This randomized trial demonstrates enhanced conversion efficiency in high-power semiconductor lasers, indicating significant improvements for fiber laser systems.
Abstract： High-power semiconductor lasers， as core pumping sources for solid-state and fiber laser systems， are of sig• nificant application value in the fields such as industrial processing and national defense.This paper reports on a pump la• ser developed to meet the requirements of mid-infrared fiber laser systems.As a pump source for fiber lasers， the device must possess high output power and high efficiency.By optimizing quantum well materials， waveguide structures， and doping profiles， a single-emitter laser with a 200 μm stripe width was fabricated， achieving an output power of 16. 12 W and a maximum conversion efficiency of 53%.Through beam combining and coupling modules， the laser was coupled into a 105 μm optical fiber with a numerical aperture (NA) of 0. 18， delivering a maximum output power of 113 W. Test re• sults indicate that the laser exhibits excellent power and temperature stability， thereby enhancing its reliability.
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Gaohui et al. (2026) studied this question.
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