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Single-Shot, Spatio-Temporal Metrology of Relativistic Plasma Optics

preprint
posted on 2024-03-04, 06:48 authored by Ankit Dulat, Amit Lad, Aparajit Chandrasekaran, Anandam Choudhary, Yash Ved, Laszlo Veisz, Gattamraju Ravindra
Plasma optics, promising for shaping and amplifying ultrahigh-power laser pulses, are subject to huge modulations and fluctuations inherent in the excitation at high intensities. Understanding their impact on the spatio-temporal structure of resulting pulses demands multidimensional characterization of relativistic plasma dynamics, an extremely difficult task, particularly at the low repetition rates typical of such lasers. Here, we present three-dimensional (3D) spatio-temporal measurements of such pulses based on spectral interferometry. We measure the complex space-time distortions induced in the laser pulses by relativistic plasma while simultaneously capturing the underlying plasma dynamics, all in a single shot. This all-optical technique can capture 3D spatio-temporal couplings within pulses at ultrahigh peak powers, enabling further progress in ultrahigh-intensity laser and plasma technologies.

History

Funder Name

Science and Engineering Research Board (JBR/2020/000039); Vetenskapsr├ądet (2019-02376,2020-05111); Infosys - TIFR Leading Edge (Cycle 2)

Preprint ID

111994

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