Abstract:Focusing of femtosecond laser pulses in gases can produce
different
gas breakdown phenomena depending on the focusing conditions: from
simple optical breakdown like laser “sparks” to a nonlinear
optical breakdown like filamentation. The dynamics of such plasmas
after the pulse exposure is dependent on the energy deposited by the
laser in the breakdown volume. Using a time- and position-dependent
breakdown model, we estimate the breakdown volume and show that the
energy deposited by the laser in this breakdown … Show more
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