Configuration optimization of off-axis parabolic mirror for enhancing the focusability of a laser beam

• 作者: Xiahui Zeng
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Physical Optics
• 页码范围: 80-85
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202119.032601

摘要

We demonstrate a configuration optimization process of an off-axis parabolic mirror to maximize the focused peak intensity based on a precise knowledge of the tight focusing properties by using a full vector-diffraction theory and obtain an optimum configuration scaling rule,which makes it possible to achieve the maximum peak intensity.In addition,we also carry out an assessment analysis of the offset and off-axis angle tolerances corresponding to a 5％ drop of the maximum focused peak intensity and present scaling laws for the tolerances of the offset and off-axis angle.Understanding these scaling laws is important to enhance the focusability of a laser beam by an off-axis parabolic mirror in the optimum configuration,in particular,which is valuable for structural design and selection of an off-axis parabolic mirror in ultrashort and ultraintense laser-matter interaction experiments.