论文标题
从介电后视镜反射倾斜后，侧束移动和去极化
Lateral beam shifts and depolarization upon oblique reflection from dielectric mirrors
论文作者
论文摘要
包含薄膜多层的介电镜被广泛用于光学实验中，因为与金属镜相比，它们可以实现更高的反射率。在这里，我们研究了在倾斜发生率的介电镜时可能会出现的潜在问题，尤其是用于聚焦的光束。我们发现，从介电镜反射的光束可以体验侧束移位，束形失真和去极化，并且这些效果对波长，入射角和入射极化具有很强的依赖性。由于介电镜的供应商通常不共享其产品的特定层结构，因此我们设计和模拟了几个介电晶状体堆栈，然后还测量了从两个商业介电镜和一个涂层金属镜的侧束移动。我们希望本文在某些光学实验中能够使介电镜和前表面金属镜之间的权衡认识，并建议当介电后视镜的供应商提供有关偏斜发生率时的梁移位，变形和去极化的信息。
Dielectric mirrors comprising thin-film multilayers are widely used in optical experiments because they can achieve substantially higher reflectance compared to metal mirrors. Here we investigate potential problems that can arise when dielectric mirrors are used at oblique incidence, in particular for focused beams. We found that light beams reflected from dielectric mirrors can experience lateral beam shifts, beam-shape distortion, and depolarization, and these effects have a strong dependence on wavelength, incident angle, and incident polarization. Because vendors of dielectric mirrors typically do not share the particular layer structure of their products, we designed and simulated several dielectric-mirror stacks, and then also measured the lateral beam shift from two commercial dielectric mirrors and one coated metal mirror. We hope that this paper brings awareness of the tradeoffs between dielectric mirrors and front-surface metal mirrors in certain optics experiments, and suggest that vendors of dielectric mirrors provide information about beam shifts, distortion, and depolarization when their products are used at oblique incidence.
