Optimizing Laser Pulses for Narrow-Band Inverse Compton Sources in the High-Intensity Regime

Daniel Seipt, Vasily Yu Kharin, Sergey G. Rykovanov

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    Scattering of ultraintense short laser pulses off relativistic electrons allows one to generate a large number of X- or gamma-ray photons with the expense of the spectral width - temporal pulsing of the laser inevitable leads to considerable spectral broadening. In this Letter, we describe a simple method to generate optimized laser pulses that compensate the nonlinear spectrum broadening and can be thought of as a superposition of two oppositely linearly chirped pulses delayed with respect to each other. We develop a simple analytical model that allows us to predict the optimal parameters of such a two-pulse - the delay, amount of chirp, and relative phase - for generation of a narrow-band γ-ray spectrum. Our predictions are confirmed by numerical optimization and simulations including three-dimensional effects.

    Original languageEnglish
    Article number204802
    JournalPhysical Review Letters
    Volume122
    Issue number20
    DOIs
    Publication statusPublished - 22 May 2019

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