Abstract

We generated and characterized plasma with single and double picosecond laser pulses to study the plume dynamics and to control the plasma properties. The double pulse scheme was found to be superior for generating a homogeneous plasma. Lateral expansion was prominent in irradiation schemes wherein the energy in the first pulse is lower than or equal to that of the second pulse. The velocities of the fast and slow species were found to be nearly equal with the emission counts corresponding to slow species being larger for the single pulse compared to the double pulse.

© 2018 Optical Society of America

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