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arXiv 1411.6325physics.optics
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非线性负折射介质光控放大透镜

Dielectric Optical-Controlled Magnifying Lens by Nonlinear Negative Refraction

Jianjun Cao, Ce Shang, Yuanlin Zheng, Xianfeng Chen, Xiaogan Liang, Wenjie Wan

摘要:

一个简单的光学透镜通过折射光的空间变化折射率在科学和技术中探索微观世界起着重要的作用。纳米技术的最新进展使得新型透镜(诸如,超透镜、超透镜、Luneburg透镜)能够通过利用超材料和变换光学器件专门设计材料的折射率而具有亚波长分辨率能力。然而,这些人工纳米/微工程透镜通常遭受金属的高损耗,并且在制造中要求很高。在这里,我们首次在实验上演示了一种非线性介质放大透镜,它利用简并四波混频在平凹载玻片中产生的负折射效应,获得了放大图像。此外,我们将变换光学引入非线性区域,将非线性平面透镜变换为放大透镜,通过非线性波混频实现全光学可控透镜效应,这在显微镜和成像科学中有着广泛的应用前景。

英文摘要:

A simple optical lens plays an important role for exploring the microscopic world in science and technology by refracting light with tailored spatially varying refractive index. Recent advancements in nanotechnology enable novel lenses, such as, superlens, hyperlens, Luneburg lens, with sub-wavelength resolution capabilities by specially designing materials' refractive indices with meta-materials and transformation optics. However, these artificially nano/micro engineered lenses usually suffer high losses from metals and are highly demanding in fabrication. Here we experimentally demonstrate for the first time a nonlinear dielectric magnifying lens using negative refraction by degenerate four-wave mixing in a plano-concave glass slide, obtaining magnified images. Moreover, we transform a nonlinear flat lens into a magnifying lens by introducing transformation optics into nonlinear regime, achieving an all-optical controllable lensing effect through nonlinear wave mixing, which may have many potential applications in microscopy and imaging science.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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