论文标题
极端乌U频率梳子的创纪录高耦合效率的非脉冲增强腔
Noncollinear enhancement cavity for record-high out-coupling efficiency of an extreme-UV frequency comb
论文作者
论文摘要
我们以154 MHz的重复速率以有效的产生和提取极端粉状（XUV）的频率梳子，证明具有横梁几何形状的飞秒增强腔。我们在97 nm的波长下实现了创纪录的600μW的高耦合功率，可直接用于光谱。这对应于> 60％的外耦合效率。 XUV功率缩放和发电效率类似于在线增强腔内的单个高斯模式基本束实现的效率。非连接几何形状还为以> 100 MHz的重复率生成孤立的Attosond脉冲开门。
We demonstrate a femtosecond enhancement cavity with a crossed-beam geometry for efficient generation and extraction of extreme-ultraviolet (XUV) frequency combs at a 154 MHz repetition rate. We achieve a record-high out-coupled power of 600 μW, directly usable for spectroscopy, at a wavelength of 97 nm. This corresponds to a >60% out-coupling efficiency. The XUV power scaling and generation efficiency are similar to that achieved with a single Gaussian-mode fundamental beam inside a collinear enhancement cavity. The noncollinear geometry also opens the door for the generation of isolated attosecond pulses at >100 MHz repetition rate.
