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Method utilizing time correlation property of chaotic laser for imaging and device adopting same

A chaotic laser, time correlation technology, applied in the laser field, can solve the problems of expensive detectors, difficult quantum entanglement, and difficult parameters to control.

Inactive Publication Date: 2012-06-13
SHANGHAI DIANJI UNIV
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Problems solved by technology

[0005] Aiming at the problems in the prior art that it is difficult for the laser signal to enter the quantum entanglement state in entangled photon pair imaging, the detector is expensive; the parameters in pseudothermo-optic imaging are not easy to control, and the adaptability of the imaging system is not good. Effects The method and device for imaging using the time-correlated characteristics of chaotic lasers is one of the urgent problems to be solved in the field of laser technology

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  • Method utilizing time correlation property of chaotic laser for imaging and device adopting same
  • Method utilizing time correlation property of chaotic laser for imaging and device adopting same
  • Method utilizing time correlation property of chaotic laser for imaging and device adopting same

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Embodiment Construction

[0040] The embodiments of the present invention provide a method and device for imaging using the time-correlated characteristics of chaotic lasers. The chaotic lasers are generated by a laser, and then the chaotic lasers are subjected to path separation processing through a beam splitter and the reference light and the path separation processing are recorded. The light intensity of the object light, and then correlate the light intensity through the correlator to obtain the imaging of the object. The quantum imaging scheme using the chaotic laser as the light source can obtain a more efficient imaging method than entangled photon pair imaging and pseudo-thermo-optic imaging. Good imaging effect.

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0042] An embodiment of the present invention provides ...

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Abstract

The invention provides a method utilizing the time correlation property of chaotic laser for imaging and a device adopting the same. A laser generates chaotic laser, the chaotic laser is subject to path isolation treatment, the light intensity of both reference light and objective light which are required for path isolation treatment is recorded, then the light intensity is subject to associative processing through a correlator, and the imaging of an object is acquired. In the invention, as the quantum imaging scheme that the chaotic laser serves as the light source is adopted, a better imaging effect can be obtained relative to imaging and pseudo calorescence imaging of entangled photons.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a method and device for imaging by using the time-correlation characteristic of chaotic laser. Background technique [0002] The earliest quantum imaging (ghost imaging) scheme was proposed by former Soviet scholar Klyshko based on the entanglement behavior of spontaneous parametric down-conversion photon pairs. Afterwards, Shi Yanhua's group at the University of Maryland in the United States realized ghost imaging of two-photon entangled sources experimentally for the first time. At that time, the two-photon entangled state of ghost imaging was attributed to nonlocality, and quantum theory and quantum entangled state were regarded as the prerequisites for realizing ghost imaging. But in 2002, R.S.Bennink performed ghost imaging experiments with laser light passing through randomly rotating mirrors. In 2004, the Italian Lugiato research group proposed that ghost imaging can be r...

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Application Information

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IPC IPC(8): G02B27/00G02B27/10
Inventor 陈智鹏曲继业
Owner SHANGHAI DIANJI UNIV