论文标题
关于介电微粒授予的亚波长度分辨率
On subwavelength resolution granted by dielectric microparticles
论文作者
论文摘要
在这项工作中，我们报告了一项对简单玻璃微孔授予的横向分辨率的理论研究。在这项2D研究中，我们牢记了3D模拟 - 一种微球，其能力自2011年以来就已经知道了亚微米对象的深层且强烈放大的图像。从传统上讲，观察到该图像的显微镜是调谐的，以便看到微球背后的区域。这对应于微球在距离上形成的虚拟源的位置，比实际源到虚构的距离的距离更长。最近，当虚拟源在通过微球传输的波梁中形成时，我们从理论上发现了一个新的超分辨率。但是，在这项工作中，我们集中于在不切实际的成像系统中实现超分辨率的情况，在该系统中，显微镜物镜的镜头被位于小于雷利范围的距离的微芯片所取代。本文理论上回答了一个重要的问题：微球的远场纳米影像的哪种情况在很大的距离上授予了最好的空间。我们发现，新颖的情况（对应于较高的折射率）有望进一步增强分辨率。
In this work we report a theoretical study of the lateral resolution granted by a simple glass microcylinder. In this 2D study, we had in mind the 3D analogue -- a microsphere whose ability to form a deeply subwavelength and strongly magnified image of submicron objects has been known since 2011. Conventionally, the microscope in which such the image is observed is tuned so that to see the areas behind the microsphere. This corresponds to the location of the virtual source formed by the microsphere at a distance longer than the distance of the real source to the miscroscope. Recently, we theoretically found a new scenario of superresolution, when the virtual source is formed in the wave beam transmitted through the microsphere. However, in this work we concentrated on the case when the superresolution is achieved in the impractical imaging system, in which the microscope objective lens is replaced by a microlens located at a distance smaller than the Rayleigh range. The present paper theoretically answers an important question: which scenario of far-field nanoimaging by a microsphere grants the finest spatial at very large distances. We found that the novel scenario (corresponding to higher refractive indices) promises further enhancement of the resolution.
