In this paper, we characterize a high repetition-rate regenerating plasma mirror produced by the thin film of liquid formed when two laminar streams collide. The use of a flowing liquid film is inexpensive and the interaction surface refreshes automatically, avoiding buildup of on-target debris. The composition of the liquid material and the relative angle of the film-generating nozzles was optimized for this application. Spectra measured in reflection from a water-based plasma mirror showed a blue shift but an optical reflectivity of up to 30%. The thickness of the film was found to be of the order of 2 ${\rm \mu}$ m, and the stability of the reflected spot was ${\approx }1$ mrad. The reflected beam profile was highly distorted but stable. Further optimization of the nozzles to affect the fluid flow should enable significant improvements in control of the fluid films and increase in the reflectivity of these mirrors.

在本文中，我们描述了由两个层流碰撞时形成的液体薄膜产生的高重复率再生等离子体镜。使用流动的液膜价格便宜，并且相互作用的表面会自动刷新，从而避免了目标碎屑的堆积。液体材料的成分和成膜喷嘴的相对角度针对该应用进行了优化。在水基等离子镜的反射中测得的光谱显示出蓝移，但光反射率高达30％。发现膜的厚度约为2 $ {\ rm \ mu} $ m，反射点的稳定性为 $ {\约} 1 $ 姆拉德 反射光束轮廓高度失真但稳定。进一步优化喷嘴以影响流体流动将能够显着改善流体膜的控制并增加这些反射镜的反射率。