Method for producing oval vortex light of amplitude modulator

An amplitude modulation, vortex light technology, applied in the field of diffractive optics, to achieve the effect of easy implementation, convenient fabrication and simple structure

Active Publication Date: 2017-12-26
上海霖迈实业有限公司
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Problems solved by technology

[0007] In order to solve the problem of how to realize the elliptical vortex beam with any eccentricity, and at the same time ensure the quality of the beam, and realize th...

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  • Method for producing oval vortex light of amplitude modulator
  • Method for producing oval vortex light of amplitude modulator
  • Method for producing oval vortex light of amplitude modulator

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with implementation examples and accompanying drawings.

[0036] In order to make the purpose of the invention, the technical solution and its advantages clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings.

[0037] see Figure 1-Figure 5 :

[0038] A method for generating elliptical vortex light with an amplitude modulation device. The method uses an amplitude-type imitation spiral photon sieve to generate elliptical vortex light. The structural schematic diagram of the amplitude-type imitation spiral photon sieve is as follows figure 1 As shown, the amplitude-type imitation spiral photon sieve includes a transparent medium substrate 1, an opaque metal film 2 and a spiral mesh structure 3, and the transparent medium substrate 1 is provided with the opaque metal film 2, so The spiral mesh struct...

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Abstract

The invention relates to a method for producing oval vortex light of an amplitude modulator. The method is characterized in that a novel amplitude-type photon screen is generated through imitated spiral lines and is used for appointing production of oval vortex light on a plane. The novel amplitude-type photon screen comprises a transparent medium substrate, a light-proof metal film and a spiral screen hole structure and is characterized in that the imitated spiral lines are introduced to a traditional wave zone plate structure, small holes are arranged along the spiral lines to form the amplitude-type spiral photon screen, additional optical elements are not needed, and vortex light beams can be produced. The amplitude-type photon screen related in the method is easy to process and copy and can be applied to the fields of light communication, super-resolution imaging, laser precision machining, particle control, data storage, remote sensing and the like and is applicable in wave bands ranging from X rays to terahertz.

Description

technical field [0001] The invention relates to the field of diffractive optics, in particular to an amplitude-type imitation spiral photon sieve. Background technique [0002] The so-called vortex beam is a beam with a continuous spiral phase. In other words, the wavefront of the beam is neither flat nor spherical, but like a vortex with singularity. The vortex beam has a propagating property of column symmetry, and the vortex center of this beam is a dark core, where the light intensity disappears, and the center light intensity remains zero during the propagation process. The phase wavefront of the vortex beam is distributed in a spiral shape, so the wave vector has an azimuth term, and it rotates around the center of the vortex. And just because of this rotation, the light wave carries orbital angular momentum. [0003] Li Jianlang, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, published for the first time the research on the direct outp...

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Application Information

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IPC IPC(8): G02B27/09G02B27/00
CPCG02B27/0012G02B27/0927G02B27/0944
Inventor 杜丽萍
Owner 上海霖迈实业有限公司
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