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Proceedings Paper

High-speed diagnostic techniques used for studies of pulsed-IR-laser radiation-induced target effects
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Paper Abstract

Both (continuous wave and high average power pulsed) multi-kW IR-gas lasers spark growing interest in research and industrial applications. In the pulsed mode improvements of the thermo-mechanical energy coupling efficiencies are provided by nonlinear effects due to surface plasma formation. Experiments with single pulse HF- and CO2-lasers are covering fluence ranges up to more than 100 J/cm2. A 3 kW CO2 laser additionally was operated in the repetitively pulsed mode up to 100 Hz. Target materials comprise highly reflecting metals as well as absorbing dielectric materials including optical transparencies. In these studies, fast electrical, electro-optical, and optical diagnostic methods were applied (electrical probes, optronical devices, optical fibers, high speed cameras, and laser diagnostics). Experiments are revealing the usefulness of simultaneously applying these multiple purpose high speed diagnostic methods for obtaining quantitative information and for controlling and optimizing the energy transfer rates.

Paper Details

Date Published: 1 January 1993
PDF: 12 pages
Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); doi: 10.1117/12.145833
Show Author Affiliations
Manfred Hugenschmidt, German-French Research Institute Saint-Louis (France)

Published in SPIE Proceedings Vol. 1801:
20th International Congress on High Speed Photography and Photonics
John Marks Dewey; Roberto G. Racca, Editor(s)

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