30 May 2003 Electromagnetic phenomena generated in laser-produced plasmas (Abstract Only)
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Abstract
When a laser plasma is produced on a target, various electromagnetic phenomena can occur. These can produce substantial currents and voltages in nearby structures. The effects depend on the target material and morphology, the pressure and species of the atmosphere, and the nature of the laser pulse. The following mechanisms are known to make a major contribution to electromagnetic signals detected near laser plasmas: (1) UV plume causing transient high conductivity in semiconductor targets, and ionisation in buffer gasses; (2) Laser plasma generating multi-GHz microwaves due to the generation of plasma waves; (3) Space charge and current charge travelling through vacuum due to differences in the electron and ion velocities; (4) Generation of transient magnetic fields that induce anomalous currents in conductors at the target point, and secondary induced current in nearby conductors. Many of which were first reported in the 1970s, and in this report we review their relative contributions and identify regimes where each dominate.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew M. Scott, David C. Jones, David Benton, Susan Clark, "Electromagnetic phenomena generated in laser-produced plasmas (Abstract Only)", Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); doi: 10.1117/12.472413; https://doi.org/10.1117/12.472413
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KEYWORDS
Plasmas

Electromagnetism

Signal detection

Laser optics

Semiconductor lasers

Target detection

Magnetism

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