Beam position stability analysis in the large solid state laser system

Based on the requirement of the ICF drive system project, beam position stability budget is preliminarily evaluated by the motion of optical components being related to beam position on target. To adjust as to meet stability requirement, the type B standard uncertainty, ray-tracing, finite element analyses are applied. Simultaneously based on the structure random vibration theory, the optical support structures will be represented as a single degree of freedom system with a structural mode, the stability allocations for the different sources of input or excitation can be derived.