Tuniz Alessandro, Kuhlmey Boris T
Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW, 2006, Australia.
Leibniz Institute of Photonic Technology (IPHT Jena), Albert-Einstein-Str. 9, 07745 Jena, Germany.
Sci Rep. 2015 Dec 4;5:17690. doi: 10.1038/srep17690.
We study full vector imaging of two dimensional source fields through finite slabs of media with extreme anisotropy, such as hyperbolic media. For this, we adapt the exact transfer matrix method for uniaxial media to calculate the two dimensional transfer functions and point spread functions for arbitrary vector fields described in Cartesian coordinates. This is more convenient for imaging simulations than the use of the natural, propagation direction-dependent TE/TM basis, and clarifies which field components contribute to sub-diffraction imaging. We study the effect of ordinary waves on image quality, which previous one-dimensional approaches could not consider. Perfect sub-diffraction imaging can be achieved if longitudinal fields are measured, but in the more common case where field intensities or transverse fields are measured, ordinary waves cause artefacts. These become more prevalent when attempting to image large objects with high resolution. We discuss implications for curved hyperbolic imaging geometries such as hyperlenses.
我们研究通过具有极端各向异性的有限介质板，如双曲线介质，对二维源场进行全矢量成像。为此，我们将单轴介质的精确传输矩阵方法进行调整，以计算笛卡尔坐标系中描述的任意矢量场的二维传输函数和点扩散函数。这比使用自然的、与传播方向相关的TE/TM基进行成像模拟更方便，并且阐明了哪些场分量对亚衍射成像有贡献。我们研究了寻常波对图像质量的影响，这是以前的一维方法无法考虑的。如果测量纵向场，可以实现完美的亚衍射成像，但在更常见的测量场强或横向场的情况下，寻常波会导致伪像。当试图对大物体进行高分辨率成像时，这些伪像会变得更加普遍。我们讨论了对弯曲双曲线成像几何结构（如超透镜）的影响。
