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A Method and Device for Polarization Synthesizing Vector Beams Based on Tieman Green Interferometer

A Taiman Green and polarization synthesis technology, applied in optics, instruments, optical components, etc., can solve problems such as difficult adjustment of optical paths, and achieve the effects of simplified manual operation, convenient operation, and simple structure

Inactive Publication Date: 2017-02-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires two beams of light to be incident at the same time, and it is difficult to adjust the optical path.

Method used

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  • A Method and Device for Polarization Synthesizing Vector Beams Based on Tieman Green Interferometer
  • A Method and Device for Polarization Synthesizing Vector Beams Based on Tieman Green Interferometer
  • A Method and Device for Polarization Synthesizing Vector Beams Based on Tieman Green Interferometer

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] A kind of method and device of the present invention will be based on the polarization synthesis vector beam of Teman Green interferometer, such as figure 1 shown. exist figure 1 In the above, the incident light beam is directly injected into the beam splitter through the polarizing plate from below along the optical axis direction, and the function of the polarizing plate here is to convert the incident helical light beam into a linearly polarized light polarized at 45° with the horizontal direction, so as to ensure that the polarizing beam splitter prism The intensity of the two beams after splitting is the same. The incident helical beam is reflected by the beam splitter and then enters the polarization beam splitter prism. The polarization beam splitter divides the incident helical beam into two beams of linearly polarized light with the same...

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Abstract

The invention discloses a method and a device for synthesizing a vector light beam through polarization based on a Twyman Green interferometer. Only a spiral light beam is incident along the direction of an optical axis, and emergent light of an optical system is the vector light beam. Different incident spiral light beams can generate different vector light beams. The order of the vector light beam is an absolute value of the azimuthal quantum number of the incident spiral light beam; the normalized light intensity distribution of the vector light beam is the same as that of the spiral light beam. When the incident spiral light beam is changed, the vector light beam can be generated without needing to adjust other parts of the device. By the method, repeated adjustment is not required and operation is relatively simple; compared with the prior art, the method is greatly improved.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a method and device for polarizing and synthesizing vector beams based on a Tieman Green interferometer. Background technique [0002] Vector beams are a new type of beams that have emerged in recent years. Different from common beams with uniformly distributed polarization states (linearly polarized light, elliptically polarized light, etc.), the polarization states of its beam cross-section are distributed according to certain rules. The vector beam with axisymmetric polarization state distribution is the eigensolution of Maxwell's equations in the cylindrical coordinate system. Therefore, it can also be called polarized vortex beam and axisymmetric polarized beam, etc. The polarization state of the vector beam at the center cannot be determined, that is, it has a polarization singularity, which makes its light intensity distribution have a hollow structure. Vector be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28
CPCG02B27/283
Inventor 高春清付时尧戴坤建
Owner BEIJING INSTITUTE OF TECHNOLOGYGY