Temporal Characterization of a Self-Modulated Laser Wakefield.
نویسندگان
چکیده
The temporal envelope of plasma density oscillations in the wake of an intense (I ,-, 4 x 10 TM W/cm 2 , Z = 1/an) laser pulse (400 fs) is measured using forward Thomson scattering from a copropagating, frequency doubled probe pulse. The wakefield oscillations in a fully ionized helium plasma (ne=3 x 1019cm -3) are observed to reach maximum amplitude (~ne/ne 0.1) 300 fs after the pump pulse. The wakefield growth (4 ps l ) and decay (1.9 ps -1) rates are consistent with the forward Raman scattering instability and beam loading, respectively.
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ورودعنوان ژورنال:
- Physical review letters
دوره 77 27 شماره
صفحات -
تاریخ انتشار 1996