Paper
1 June 1990 Probe investigations of close-to-surface plasma, produced by CO2 laser nanosecond pulse train
Vladimir R. Sorochenko, Victor V. Apollonov, Vitali I. Konov, Petr I. Nikitin, Alexander M. Prokhorov, Yu. A. Shakir
Author Affiliations +
Proceedings Volume 1225, High-Power Gas Lasers; (1990) https://doi.org/10.1117/12.18511
Event: OE/LASE '90, 1990, Los Angeles, CA, United States
Abstract
Investigations of currents in close-to surface plasma, produced by CO2- laser radiation of different temporal structure have been carried out. The character of evolution of registered currents temporal structure at growing energy density was different when the target was irradiated in air and in vacuum by the train of short (τ= 2.5 ns ) pulses. Experiments in vacuum have revealed that the transit from smooth single mode pulse to the nanosecond pulse train of the same total energy was followed by a considerable decrease in plasma formation energy thresholds and by the increase of amplitudes of currents induced by plasma. The current pulses from the target were registered after finishing the laser irradiation; their appearance was probably connected with cumulation effects, caused by the ring form of the irradiated area.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vladimir R. Sorochenko, Victor V. Apollonov, Vitali I. Konov, Petr I. Nikitin, Alexander M. Prokhorov, and Yu. A. Shakir "Probe investigations of close-to-surface plasma, produced by CO2 laser nanosecond pulse train", Proc. SPIE 1225, High-Power Gas Lasers, (1 June 1990); https://doi.org/10.1117/12.18511
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KEYWORDS
Plasma

Einsteinium

Gas lasers

High power lasers

Pulsed laser operation

Carbon dioxide lasers

Modulation

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