Multi-mode chirped-Pearcey-Laguerre-Gaussian space-time wave packets synergistically regulated by dispersion and chirp

This study introduces the chirped-Pearcey-Laguerre-Gaussian space-time (CPLGST) wave packets and investigates their propagation characteristics in linear dispersive media, uncovering diverse propagation regimes of the CPLGST wave packets as the radial and angular mode numbers are tuned. Modulating the second-order chirp factor and dispersion coefficient allows for tailored manipulation of the envelope profile, evolution trajectory, and propagation dynamics of the CPLGST wave packets. It further uncovers the dynamic balance regulation mechanism of the CPLGST wave packets, which is mediated by the synergistic effect of the second-order chirp factor and dispersion coefficient, while also examining the evolution characteristics and peak intensity variation laws of such wave packets under normal and anomalous dispersion conditions. Additionally, this study explores the gradient and scattering force characteristics of the CPLGST wave packets, thereby further exploring their potential applications in optical tweezers technology and microparticle manipulation.