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Metasurface for generating optical vortex lattice without diffracted light, and design method for metasurface

An optical vortex and non-diffraction technology, applied in the field of optics, can solve problems such as large vortex lattice size, inability to integrate optical systems, and complex optical path adjustment

Active Publication Date: 2018-12-11
DEZHOU UNIV
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  • Description
  • Claims
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Problems solved by technology

However, most of the optical systems currently used are relatively large, the adjustment of the optical path is complicated, and they cannot be well integrated with other optical systems; in addition, the size of the vortex lattice generated by such systems is large, which limits the optical vortex. Applications of lattices especially in the microscopic field

Method used

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  • Metasurface for generating optical vortex lattice without diffracted light, and design method for metasurface
  • Metasurface for generating optical vortex lattice without diffracted light, and design method for metasurface
  • Metasurface for generating optical vortex lattice without diffracted light, and design method for metasurface

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Embodiment Construction

[0063] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. For the experimental methods without specific conditions indicated in the following examples, usually follow the conventional conditions or the conditions suggested by the manufacturer.

[0064] Unless otherwise defined, all professional and scientific terms used herein have the same meanings as commonly understood by those skilled in the art. In addition, any methods and materials similar or equivalent to those described can be applied to the method of the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only.

[0065] Example Metasurfaces generating Kagome-type non-diffraction vortex lattices

[0066] Specifically, in this embodiment, the generation o...

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Abstract

The invention provides a metasurface for generating an optical vortex lattice without diffracted light, and a design method for a metasurface. The method comprises the steps: enabling incident light to vertically irradiate the metasurface; converting the incident light on the surface of the metasurface into transmitting independent light beams which have the specific phase difference and deflect in a preset direction, wherein the transmitting independent light beams are overlapped to generate the optical vortex lattice without diffracted light.

Description

technical field [0001] The invention relates to the field of optics, in particular to a metasurface producing a non-diffraction optical vortex lattice and a design method thereof. Background technique [0002] The non-diffraction optical vortex lattice has a unique periodic distribution of the transverse optical potential field and diffraction invariant properties along the light propagation direction, and has been widely used in many fields such as periodic laser direct writing, multi-channel optical micro-manipulation, and biological cell screening. . At present, people can produce various types of optical vortex lattices through porous interferometers or spatial light modulators combined with Fourier transform lenses. However, most of the optical systems currently used are relatively large, the adjustment of the optical path is complicated, and they cannot be well integrated with other optical systems; in addition, the size of the vortex lattice generated by such systems...

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Application Information

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IPC IPC(8): G02F1/01
CPCG02F1/0136
Inventor 李振华
Owner DEZHOU UNIV
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