We study the imaging performance of anisotropic generalized Veselago–Pendry (GVP) lenses derived via complex transformation optics technique. The derived material tensors of such generalized lenses can be controlled via a complex coordinate transformation parameter resulting in an anisotropic constitutive tensor with loss/gain characteristics. We discuss their limitations and potentials based on the parametric analysis of material properties. We show that, although GVP lenses are not affected by the loss/gain level, akin to conventional VP lenses, their subwavelength imaging performance is also susceptible to material deviations from their original values. We also discuss that the resolution of GVP lenses can be significantly improved by tuning the real part of the transformation parameter. The proposed GVP lenses could be realized using, for instance, a metal-dielectric structure, with improved subwavelength imaging characteristics.

中文翻译：

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广义Veselago-Pendry镜片的局限性和潜力

我们研究了通过复杂变换光学技术得出的各向异性广义Veselago-Pendry（GVP）透镜的成像性能。可以通过复杂的坐标变换参数来控制此类广义透镜的派生材料张量，从而得到具有损耗/增益特性的各向异性本构张量。我们将基于材料特性的参数分析来讨论其局限性和潜力。我们显示，尽管GVP透镜不受损耗/增益水平的影响，类似于常规VP透镜，但其亚波长成像性能也容易受到与其原始值的材料偏差的影响。我们还讨论了通过调整变换参数的实部可以显着提高GVP镜头的分辨率。建议的GVP镜头可以使用