title: Dielectric Optical-Controllable Magnifying Lens by Nonlinear Negative Refraction.
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 indices. Recent advancements in nanotechnology enable novel lenses, such as, superlens and hyperlens, with sub-wavelength resolution capabilities by specially designed materials' refractive indices with meta-materials and transformation optics. However, these artificially nano- or 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 the nonlinear regime, achieving an all-optical controllable lensing effect through nonlinear wave mixing, which may have many potential applications in microscopy and imaging science.
authors.affiliation: Key Laboratory for Laser Plasmas (Ministry of Education) and Collaborative Innovation Center of IFSA, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Cao
authors.affiliation: University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Ce
authors.initials: C
authors.lastname: Shang
authors.affiliation: Key Laboratory for Laser Plasmas (Ministry of Education) and Collaborative Innovation Center of IFSA, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Yuanlin
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: Key Laboratory for Laser Plasmas (Ministry of Education) and Collaborative Innovation Center of IFSA, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Yaming
authors.initials: Y
authors.lastname: Feng
authors.affiliation: 1] Key Laboratory for Laser Plasmas (Ministry of Education) and Collaborative Innovation Center of IFSA, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China [2] The State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Xianfeng
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: Xiaogan
authors.initials: X
authors.lastname: Liang
authors.affiliation: 1] Key Laboratory for Laser Plasmas (Ministry of Education) and Collaborative Innovation Center of IFSA, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China [2] University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China [3] The State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Wenjie
authors.initials: W
authors.lastname: Wan