Dielectric Optical-Controlled Magnifying Lens by Nonlinear Negative Refraction

TL;DR

This paper demonstrates a novel nonlinear dielectric magnifying lens using negative refraction via four-wave mixing, enabling all-optical control and potential applications in microscopy and imaging.

Contribution

It introduces the first experimental nonlinear dielectric magnifying lens based on negative refraction and transformation optics, with all-optical controllability.

Findings

Successful demonstration of a nonlinear magnifying lens with negative refraction.

Transformation optics enables control over lensing effects in nonlinear regime.

Potential for improved microscopy and imaging applications.

Abstract

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.