Abstract
The experiments of a laser‐induced discharge were carried out with a CO2 laser radiation in the atmospheric ambient gases under a DC electric field applied. In these experiments, both of the laser‐induced discharge and the plasma production by the CO2 laser were suppressed with an increasing DC electric field strength. Although the laser‐produced plasma was generated between the electrodes without DC electric field, both the probability of induced‐discharge and plasma production decreased with the applied voltage across the electrodes. In this paper, the mechanisms of the phenomena for the suppression of the plasma production under applying the electric field between electrodes were discussed. It was found that the attachment processes of electrons most likely played an important role in this phenomena.
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