Optical Investigations On The Interaction Of High Energy Co2-Laser Pulses With Liquid And Solid Targets

M. Hugenschmidt; K. Vol I rath

doi:10.1117/12.955255

14 September 1977 Optical Investigations On The Interaction Of High Energy Co₂-Laser Pulses With Liquid And Solid Targets

M. Hugenschmidt, K. Vol I rath

Author Affiliations +

Proceedings Volume 0097, 12th Intl Congress on High Speed Photography; (1977) https://doi.org/10.1117/12.955255
Event: 12th International Congress on High Speed Photography, 1976, Toronto, Canada

Abstract

The interaction of high-power laser radiation with material provides new interesting possibilities for the production of high pressures and temperatures causing heating, melting, evaporation, ablation and formation of dense plasmas. Experiments have been performed by using an electron beam preionized CO₂-laser delivering pulses with energies up to 30 J and pulse durations of about 5 ps. With this laser shock-wave formation inside different solid and liquid materials and the correlated phenomena of initiation and propagation of laser supported detonation-waves outside the target surface in the surrounding atmosphere were studied. l'wer densities are in the range of 106 to 108 W/cm2. Quantitative measurements, revealing the strength of the interaction, were carried out using high-speed photographic and cinematographic techniques, including a Cranz-Schardin-camera and a Beckman-Whitley rotating mirror streak- and framing-camera. In order to obtain highest time resolution during the initial phase of the interaction, an Imacon 600 image converter camera was used. Results are shown and evaluated for metallic targets and for materials which are trans-parent in the visible spectral range such as glass, plexiglass, water, and CS₂.

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M. Hugenschmidt and K. Vol I rath "Optical Investigations On The Interaction Of High Energy Co₂-Laser Pulses With Liquid And Solid Targets", Proc. SPIE 0097, 12th Intl Congress on High Speed Photography, (14 September 1977); https://doi.org/10.1117/12.955255

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