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

Manfred Hugenschmidt

doi:10.1117/12.145833

1 January 1993 High-speed diagnostic techniques used for studies of pulsed-IR-laser radiation-induced target effects

Manfred Hugenschmidt

Proceedings Volume 1801, 20th International Congress on High Speed Photography and Photonics; (1993) https://doi.org/10.1117/12.145833
Event: 20th International Congress on High Speed Photography and Photonics, 1992, Victoria, BC, Canada

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.

Citation Download Citation

Manfred Hugenschmidt "High-speed diagnostic techniques used for studies of pulsed-IR-laser radiation-induced target effects", Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); https://doi.org/10.1117/12.145833

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