Design of laser-driven integrated optics extended interaction structures for particle acceleration

We provide an overview of our research concerning Physics-Based (PB) and Inverse-Design (ID) methodologies in the development of co-linear adiabatically-tapered synchronous integrated optics structures for particle acceleration. Extended interaction structures, wherein the laser electromagnetic-field guided mode and particles propagate in the same direction, offer superior scalability and performance compared to configurations with transverse illumination. We demonstrate that PB and ID methodologies are versatile for both relativistic and non-relativistic accelerating particles, with ID showing a promising potential for transverse focusing.