标题： 由激光蚀刻镜产生的超短强场光学涡旋 显示英文标题

标题： Ultrashort intense-field optical vortices produced with laser-etched mirrors

摘要： 我们介绍了一种简单且实用的方法，用于创建超短强光学涡旋，适用于涉及高强度激光的应用。 我们的方法利用飞秒激光脉冲，在高质量金镜上蚀刻光栅线。 这些光栅线全息编码了一个光学涡旋。 我们推导出每个需要蚀刻的光栅线的数学方程，以实现任何所需的（整数）拓扑电荷。 我们研究了蚀刻槽的光滑度。 我们表明它们足够平滑，可以产生强度仅比理想情况低几个百分点的光学涡旋。 我们演示了蚀刻光栅可以在我们2f-2f设置[马里延科等人，Opt.Express 19, 7599 (2005)]的折叠版本中使用，以补偿角度色散。 最后，我们证明蚀刻的光栅能够承受高达10^12 W/cm²的强度。 显示英文摘要

摘要： We introduce a simple and practical method to create ultrashort intense optical vortices for applications involving high-intensity lasers. Our method utilizes femtosecond laser pulses to laser-etch grating lines into laser-quality gold mirrors. These grating lines holographically encode an optical vortex. We derive mathematical equations for each individual grating line to be etched, for any desired (integer) topological charge. We investigate the smoothness of the etched grooves. We show that they are smooth enough to produce optical vortices with an intensity that is only a few percent lower than in the ideal case. We demonstrate that the etched gratings can be used in a folded version of our 2f-2f setup [Mariyenko et al., Opt. Express 19, 7599 (2005)] to compensate angular dispersion. Lastly, we show that the etched gratings withstand intensities of up to 10^12 W/cm2.