An Analysis Method with Equivalent Circuit for the Electrical Effect Induced by Laser Plasma

Yun Jing Ji; Chun Yong Wang; Bao Min Bian; Zhen Hua Li

doi:10.4028/www.scientific.net/AMR.291-294.3318

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An Analysis Method with Equivalent Circuit for the Electrical Effect Induced by Laser Plasma
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294An Analysis Method with Equivalent Circuit for the...

An Analysis Method with Equivalent Circuit for the Electrical Effect Induced by Laser Plasma

Abstract:

Electrical effect induced by the laser plasma was investigated with an external tiny probe during Nd:YAG high-power pulse laser ablation on copper target in air. One equivalent circuit for the electrical effect induced by laser plasma was proposed. Based on the equivalent circuit, a new theoretical explanation of the signal generation mechanism is proposed, and the reason that the distribution of electrical signal wave is strongly dependent on the probe distance was discussed. Further the observed signal peak polarity overturn was explained.