Physics-based design of integrated optics accelerating structures

Miniaturized laser-driven structures employing dielectrics have attracted great interest due to their high breakdown threshold compared to metals, alongside with the availability of powerful, stable laser sources and fabrication technologies developed for telecommunications. This contribution introduces a comprehensive methodology for the design of co-linear accelerating structures. The extended co-linear propagation of both electromagnetic field (laser) and particles offers superior scalability and performance compared to transverse parallel illumination. Physics-Based (PB) and Inverse-Design (ID) approaches entail the design of an adiabatically-tapered synchronous structure, customized for both relativistic and non-relativistic accelerating particles. PB and ID methodologies have the potential not only to enable continuous acceleration from sub-relativistic to relativistic velocities, but also to provide transverse focusing capabilities.