Ultrafast Laser Pulsetrain Burst Processing of Glasses for Damage Mitigation

摘要

In modern high-intensity laser applications using large-diameter optics, approaching 1 meter in diameter, the lifetime and practicality of the components is affected by concerns of laser damage W. Such optics cannot practically be manufactured defect-free, and flaws can be acquired during handling and use. A routine method of repairing and mitigating damage to components such as fused silica lenses and windows is required. One proposal is to mitigate damage by cutting out localized defects using ultrafast laser machining, trimming and 'healing' small damage sites before they can grow and cause further problems during use.