Electron Acceleration and Radiation Generation from Relativistic Laser-Plasma Interactions at High Repetition-Rate

TL;DR

This paper investigates laser-plasma interactions at high repetition rates to enhance electron acceleration and radiation generation, combining experimental and computational methods with statistical optimization.

Contribution

It introduces high-repetition-rate laser experiments with ultrashort pulses and diverse plasma targets, advancing understanding of electron acceleration and radiation production.

Findings

Optimized electron acceleration using high-repetition-rate lasers.

Enhanced radiation generation observed with specific plasma conditions.

Statistical methods improved experimental interpretation.

Abstract

This dissertation explores the interaction between high-intensity lasers and plasmas to accelerate electrons and produce radiation via experimental and computational efforts. The laser pulses used in this dissertation have ultrashort duration (< 100 fs), near-infrared to mid-infrared wavelength (0.8 $\mu$m, 2 $\mu$m, or 3.9 $\mu$m), millijoules of energy, and high repetition rates (480 Hz or 20 Hz). The plasma sources applied are from solid-density targets (overdense) or gaseous targets (underdense). With the high-repetition-rate capability, statistical methods are employed to optimize certain aspect of the experiments and to interpret the physics.