Electromagnetic forces on the dielectric layers of the planar optical Bragg acceleration structure

摘要: Optical Bragg acceleration structures are waveguides with a vacuum core and dielectric layers as cladding, designed to guide laser light at the speed-of-light TM mode accelerate charged particles. In this study, we analyze electromagnetic forces exerted on of planar structure by both guided wake-field moving charges. The distribution volume force densities, well surface in interfaces between result propagation is given, analytic scaling laws for maximal values obtained. Separation into structure's eigenmodes essential order determine different contributions total impulse that acts structure. It shown impact results almost entirely from fundamental mode. While may be significantly stronger than gravitational force, show typical structures, pressures develop orders magnitude below damage threshold.