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MITIGATION OF THE HARMFUL EFFECTS OF STRAY-LIGHT REFLECTIONS IN HIGH-ENERGY LASER SYSTEMS
MITIGATION OF THE HARMFUL EFFECTS OF STRAY-LIGHT REFLECTIONS IN HIGH-ENERGY LASER SYSTEMS
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机译:缓解高能激光系统中杂散光反射的有害影响
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摘要
Reduction or elimination of negative consequences of reflected stray light from lens surfaces is achieved by propagating a laser beam through an eccentric pupil that excludes the optical axis of the system, which is rotationally symmetric. In such systems, stray light reflections eventually are focused onto the unique optical axis of the system, in either a real or virtual focal region. By using an eccentric pupil, all damage due to focusing of the stray light lies outside of the beam. These focal regions can, e.g., be physically blocked to eliminate beam paths that lead to optical damage, pre-pulse beams and parasitic lasing.
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