Dulat A, Aparajit C, Choudhary A, Lad AD, Ved YM, Paradkar BS, Ravindra Kumar G. Subpicosecond pre-plasma dynamics of a high contrast, ultraintense laser-solid target interaction.
OPTICS LETTERS 2022;
47:5684-5687. [PMID:
37219303 DOI:
10.1364/ol.461452]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 10/03/2022] [Indexed: 05/24/2023]
Abstract
Using the spectral interferometry technique, we measured subpicosecond time-resolved pre-plasma scale lengths and early expansion (<12 ps) of the plasma produced by a high intensity (6 × 1018 W/cm2) pulse with high contrast (109). We measured pre-plasma scale lengths in the range of 3-20 nm, before the arrival of the peak of the femtosecond pulse. This measurement plays a crucial role in understanding the mechanism of laser coupling its energy to hot electrons and is hence important for laser-driven ion acceleration and the fast ignition approach to fusion.
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