用于在增强腔中实现非共线圆偏振高次谐波产生的光学设计
Optical design for implementing non-collinear circularly polarized high harmonic generation in an enhancement cavity
- Université Paris-Saclay, CEA, LIDYL(巴黎萨克雷大学、法国原子能和替代能源委员会、激光与光物理实验室)
机构由 AI 辅助整理,请以论文原文为准。
中文总结 AI 辅助
提出一种新型光学腔设计,用于高效输出耦合腔增强高次谐波产生的极紫外光,支持非共线圆偏振模式,并验证了其产生8.4 eV第7次谐波以用于钍核光谱学的潜力。
中文摘要 AI 辅助
我们提出了一种原创的光学腔设计,旨在高效输出耦合通过腔增强高次谐波产生(CE-HHG)产生的极紫外(XUV)光。该设计支持在具有高精细度的腔内以小角度交叉传播的相反圆偏振模式的放大,在此腔中可实现圆偏振高次谐波产生方案(NCP-HHG)。我们展示了一个解析模型、数值模拟以及使用低功率连续(CW)激光器获得的实验结果,证明了该腔作为高效XUV输出耦合方法的强大潜力。特别地,它非常适合从镱频率梳产生第7次谐波(H7),其能量为8.4 eV,这对于钍的精密核光谱学尤为重要。
英文摘要
We introduce an original optical cavity design intended to efficiently output-couple extreme ultraviolet (XUV) light produced via cavity-enhanced high harmonic generation (CE-HHG). It supports the amplification of oppositely circularly polarized modes, crossing with a small angle in the high finesse cavity, where circularly polarized HHG scheme (NCP-HHG) will be implemented. We present an analytical model, numerical simulations, and experimental results obtained with a low-power continuous (CW) laser, demonstrating the strong potential of the cavity as an efficient XUV output coupling method. In particular, it is well suited for producing the 7th harmonic (H7) from an Ytterbium frequency comb at 8.4 eV, which is of particular interest for precision nuclear spectroscopy of Thorium.