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The optical fiber delivery laser power technology in laser flexible manufacturing system is introduced. The characteristics of optical fiber delivery Nd:YAG pulsed laser power through multimode silica fiber are experimentally researched, which include beam spatial characteristics of fiber exit beam and the capacity of optical fiber delivery high power laser. The effects of laser injection condition and optical fiber bending radius on optical fiber delivery laser beam system are analyzed. The morphology characterization of laser induced damage to optical fiber end-faces were measured and investigated. The model of laser induced damage to fiber end faces is presented.
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