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Eye-Safe Laser Generates 7 W of Average Power

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Breck Hitz

Eye-safe lasers with output in the 1.5-µm regime are in demand for rangefinding, lidar and other remote-sensing applications. Most of them have depended on awkward nonlinear optics or on complex cross-excitation pumping schemes to generate 1.5-µm light, but researchers at BAE Systems in Nashua, N.H., have developed a resonantly pumped Er:YAG laser that generates 7 W of eye-safe radiation at 1.64 µm. They believe that this is the highest average power achieved from a bulk, Q-switched erbium laser. The advantage of bulk lasers over fiber lasers is their ability to produce the high-energy,...Read full article

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    Published: August 2004
    Glossary
    nonlinear optics
    Nonlinear optics is a branch of optics that studies the optical phenomena that occur when intense light interacts with a material and induces nonlinear responses. In contrast to linear optics, where the response of a material is directly proportional to the intensity of the incident light, nonlinear optics involves optical effects that are not linearly dependent on the input light intensity. These nonlinear effects become significant at high light intensities, such as those produced by...
    Basic Sciencecomplex cross-excitation pumping schemesEye-safe lasersfiber lasersmirrorsnonlinear opticsOpticsremote-sensing applicationsResearch & TechnologyTech PulseLasers

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