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One-time imaging and access method based on relevance optics

An access method and associated optical technology, applied in the field of single imaging and access, can solve the problems of inability to access and low sensitivity, and achieve the effect of single imaging and access and high sensitivity

Active Publication Date: 2015-03-04
EAST CHINA NORMAL UNIV
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  • Abstract
  • Description
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Problems solved by technology

It can overcome the low sensitivity of traditional optical imaging and the shortcomings of traditional "ghost" imaging that require multiple statistical averaging and inaccessibility

Method used

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  • One-time imaging and access method based on relevance optics
  • One-time imaging and access method based on relevance optics
  • One-time imaging and access method based on relevance optics

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Embodiment

[0032] refer to figure 1 , figure 1 yes 87Rb atom "∧" structure and Raman scattering process; among them, 5S 1 / 2 , 5P 1 / 2 , 5P 3 / 2 for 87 The fine structure of Rb atom, F=1, F=2 is the fine structure 5S 1 / 2 The hyperfine split of , its energy level difference is 6.8GHz; the dotted line shows 87 The virtual energy level of the Rb atom.

[0033] Concrete implementation process of the present invention is as follows:

[0034] figure 2 It is a schematic diagram of the optical path of the embodiment; in the figure: 1-semiconductor laser (incident Raman write light); 2-semiconductor laser (optical pump light); 3-semiconductor laser (incident Raman read light); 4, 5-detector ;6-Computer (second-order correlation calculation);7- 87 Rb atomic pool; 8-magnetic shielding device; 9-piezoelectric ceramics (object to be imaged); 10, 11, 12, 13, 14-beam splitter; 15, 16-polarization beam splitter; 17, 18, 19 , 20, 21, 22-reflectors; 23, 24, 25, 26-half-wave plates; 27, 28-attenua...

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Abstract

The invention discloses a one-time imaging and access method based on relevance optics. The one-time imaging and access method uses lasers as a light source, is based on the scattering process of a storage medium and uses strength relevance measurement to achieve imaging and access. According to the one-time imaging and access method, the storage medium is required to be arranged in a light path, an object to be measured is placed in the detecting light path, the phase of the object to be measured is stored into the storage medium by writing light, the phase of the object to be measured is read by reading light from the storage medium, through use in cooperation with the first-order relevance measurement, the second-order relevance calculation of the time integral is carried out on scattered light signals generated in the one-time writing and reading process, a stable phase relevance function can be obtained, and accordingly the one-time imaging and access can be achieved. Compared with the traditional imaging method, the one-time imaging and access method is high in sensitivity. Compared with the traditional relevance optic imaging method, the one-time imaging and access method can achieve one-time imaging and access.

Description

technical field [0001] The invention belongs to the fields of nonlinear optics, quantum optics and information, and is a single imaging and access method realized by correlative optical measurement based on the interaction between light and atoms. Background technique [0002] Traditional optical imaging, including interferometric imaging based on first-order correlation measurements, is based on the distribution measurement of light field intensity. When a beam of detection light is reflected or transmitted from the object to be imaged, the intensity of the light will change, and the image of the object can be obtained according to the intensity of the light field detected by each pixel. This type of imaging technology is relatively mature and popular, but there are still two major defects: first, it depends heavily on the intensity of the probe light; second, it cannot break through the Rayleigh diffraction resolution limit. [0003] Since the imaging quality depends heav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/89
Inventor 陈丽清张凯郭进先边成玲袁春华区泽宇张卫平
Owner EAST CHINA NORMAL UNIV
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