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Ghost imaging method using classical entanglement

A ghost imaging, a classic technology, applied in the field of ghost imaging research, it can solve the problems of vortex light power fluctuation and low imaging resolution, and achieve the effect of easy adjustment and simple structure

Pending Publication Date: 2022-07-01
CHINA JILIANG UNIV
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Problems solved by technology

[0004] The beam drift caused by atmospheric disturbance will cause vortex optical power fluctuation and scintillation, which makes the imaging resolution lower when performing ghost imaging
The use of classical entanglement can resist disturbance, but the preparation of high-dimensional classical entanglement for ghost imaging is still an unsolved problem in current technology

Method used

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  • Ghost imaging method using classical entanglement
  • Ghost imaging method using classical entanglement

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the examples. The following examples are the explanations of the present invention, and are also better application forms of the present invention, but the present invention is not limited to the following examples.

[0019] like figure 1 As shown, it is a schematic structural diagram of a ghost imaging using classical entanglement provided in the embodiment of the present invention: it includes a laser 1; a spatial light modulator 2; a computer 3; an object to be imaged 4; a CCD detector 5;

[0020] In this embodiment, the computer 3 generates a computational hologram according to the formula, loads the CGH on the liquid crystal screen of the spatial light modulator 2, and plays it at a specific speed; turns on the laser 1, so that the beam output by the laser 1 is modulated by the spatial light The device 2 obtains a beam of twisted multi-mode vortex beam; the obtained beam passes through the ob...

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Abstract

The invention relates to a method for realizing ghost imaging by using classical entanglement. According to the method, a multi-mode vortex light beam loaded with a twisted phase is constructed by using a computer, and the multi-mode vortex light beam is formed by non-coherent superposition of a plurality of single-mode vortex light. The light beam passes through an object to be imaged and then enters a CCD camera, product operation is carried out by utilizing a shot light intensity data matrix and transmission operation data of the prepared distorted multimode vortex light beam, and second-order correlated spatial distribution of the object is obtained, so that an image of the object to be imaged is obtained. According to the invention, classical entanglement is introduced into ghost imaging, a new classical entanglement ghost imaging method is realized, the imaging method has good turbulence resistance, and the optical element has no special requirements and is simple in structure.

Description

technical field [0001] The invention belongs to the field of ghost imaging research, and relates to a classical entangled ghost imaging scheme. Background technique [0002] Classical entanglement refers to the entanglement between the different degrees of freedom of a single system that occurs in a classical system, and the presence of twisted phases in a random beam leads to classical entanglement between the degrees of freedom in the beam's phase space. [0003] Ghost imaging obtains the spatial or phase distribution information of the object by correlating the light intensity fluctuation information of the test optical path and the reference optical path. This imaging method realizes the separation of detection and imaging, that is, off-object imaging. The imaging quality of ghost imaging systems is affected by light source-related properties, object material, shape, and scattering. [0004] The beam drift caused by the atmospheric disturbance will cause the power fluc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/372G01B11/00G01B11/24G01J9/00
CPCG01B11/00G01B11/2441G01J9/00H04N25/71
Inventor 陈君吴洋
Owner CHINA JILIANG UNIV
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