Multifunctional super-structure lens capable of being regulated and controlled by any polarization state, and manufacturing method thereof

Abstract

The invention relates to a multifunctional super-structure lens capable of being regulated and controlled by any polarization state, and a manufacturing method thereof. The multifunctional super-structure lens comprises a substrate layer and first to third type structural units arranged on the substrate layer, the first type structural units are rectangular nano-columns which are different in length and same in width and are suitable for regulating and controlling X-ray polarized light, the second type structural units are rectangular nano-columns which are different in width and length and suitable for regulating and controlling Y-line polarized light, the third structural units are cylindrical nano-columns which are different in radius and suitable for regulating and controlling any polarized light, and the first to third structural units have the same period and height and are arranged on the substrate layer in a staggered mode according to the spatial multiplexing principle to correspondingly meet a preset phase required by regulation so as to make the orthogonal line polarized light and other polarized light subjected to off-axis and on-axis focusing on a confocal plane respectively. The lens can realize any polarization state regulation and control and coplanar zooming under a single wavelength, and overcomes the problem that an existing multifunctional super-structure lens can only be regulated and controlled by a limited polarization state.

Description

technical field [0001] The invention relates to the fields of artificial electromagnetic materials and micro-nano photonics, in particular to a multifunctional metalens that can be adjusted by any polarization state and a manufacturing method thereof. Background technique [0002] Metalens is a planar optical device composed of a periodic array of subwavelength structural units, which has excellent electromagnetic properties and is suitable for highly integrated and miniaturized optical systems. At this stage, researchers have widely focused on the research of polarization-controlled multifunctional metalenses, but no one has realized the design of multifunctional metalenses that can be adjusted by arbitrary polarization states, thus realizing the realization of arbitrary polarization-tunable multifunctional metalenses. Design matters. [0003] In order to realize the design of multifunctional metalenses with polarization control, researchers at home and abroad have carried...

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the defects of the above-mentioned background technology, provide a multifunctional metalens that can be adjusted by any polarization state and its manufacturing method, realize arbitrary polarization state adjustment and coplanar zoom at a single wavelength, overcome the existing multiple The problem that functional metalenses can only be tuned by limited polarization states

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