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9 March 2020 Nanosecond pulse shaping allowing 500 mJ injection in a single core multimode fiber for laser shock peening applications (Conference Presentation)
Guillaume Gorju, Nadezda Varkentina, Adam Ayeb, Xavier Levecq
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Proceedings Volume 11273, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems IX; 1127306 (2020) https://doi.org/10.1117/12.2546091
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
Laser shock surface treatment applications, ie with plasma formation, require pulses of very high peak power and duration of the order of a few tens of nanoseconds. This processing technique are generally performed in free space due to the difficulties to inject such peak power in a single core fiber. We present a innovative method allowing to inject 500 mJ pulses at 1064 nm in a single core multimode fiber. This subsystem allows at once to secure the input interface of the fiber and to reduce the optical losses due to Brillouin scattering.
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Guillaume Gorju, Nadezda Varkentina, Adam Ayeb, and Xavier Levecq "Nanosecond pulse shaping allowing 500 mJ injection in a single core multimode fiber for laser shock peening applications (Conference Presentation)", Proc. SPIE 11273, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems IX, 1127306 (9 March 2020); https://doi.org/10.1117/12.2546091
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KEYWORDS
Fiber lasers
Multimode fibers
Laser applications
Pulse shaping
Pulsed laser operation
Laser processing
Laser scattering
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