Work

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

Year: 2019

Type: article

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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.122.204802

Authors: Daniel Seipt, Vasily Yu. Kharin, Sergey G. Rykovanov

Institutions: Helmholtz Institute Jena, University of Michigan, Skolkovo Institute of Science and Technology

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Helmholtz Association, Army Research Office

Award: G5151226951