From Saddle-Shaped to Dual-Peak Radiation: Synergistic Control of Laser Parameters for Collimation Leap and Quadratic Power Scaling in Nonlinear Thomson Scattering

This paper studies the coupling effect of laser intensity and waist radius on a series of electron radiation characteristics, such as radiation power, electron trajectory, a time spectrum, and a frequency spectrum. Through a large number of numerical simulations, based on the study of all radiation patterns, the influence laws and mechanisms of these two parameters are revealed. The larger the light intensity a0, the greater the influence of the waist radius ω0 on the symmetry of the radiation power. When the light intensity is the same, the larger the waist radius, the greater the radiation power, the better the collimation, and the radiation power approximately satisfies a quadratic function. These results indicate that the radiation power can be rapidly increased by seven orders of magnitude through adjustment. Through a numerical simulation, we have obtained high-energy, high-frequency, high-collimation, good directivity, and supercontinuum X-rays. The above research has a pioneering guiding significance for the modulation of X-rays in optical laboratories.