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Report No.
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Development of a high-average-power compact Nd:YAG laser system for infrastructure inspection

Mikami, Katsuhiro; Hasegawa, Noboru; Okada, Hajime; Kondo, Shuji; Kawachi, Tetsuya

An outside-use laser system to improve the performances of existing tunnel inspection techniques is studied. One of the typical concepts is that the blow by hammer in routine test is replaced by the laser pulse irradiation. This new laser system is required to provide high average output power (5 J, 50 Hz, $$sim$$15 ns) with a small-scale geometry enough to mount on the inspection vehicle (4.2 m $$times$$ 0.8 m). In this presentation, we will report a potential to demonstrate 5 J output.

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