Single photon polarization imaging array with gathering and smoothing functions

A polarization imaging and single-photon technology, which is applied to electrical components, electric solid devices, circuits, etc., can solve the problems of no polarization detection, no convergence coupling, and reduce the device table, so as to prevent interference, enhance polarization selectivity, reduce Effect of small device dark count

Inactive Publication Date: 2017-05-31
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

In addition, stray light in the background environment will also have an adverse effect on single-photon detection. If the stray light in the background environment can be effectively filtered while converging and coupling, the performance of single-photon detectors will be further improved.
[0004] The publication date is June 19, 2013, and the Chinese invention patent document with the publication number CN103165723A discloses that the converging and coupling effect of s...

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  • Single photon polarization imaging array with gathering and smoothing functions
  • Single photon polarization imaging array with gathering and smoothing functions
  • Single photon polarization imaging array with gathering and smoothing functions

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Embodiment 1

[0026] Such as figure 1As shown, a single-photon polarization imaging array with convergence filtering function is characterized in that: the overall structure is a two-dimensional periodic arrangement of polarization detection units, wherein each polarization detection side unit includes a single-photon detector group and four Concentrating coupling structures with different polarization directions, four converging coupling structures are integrated on the single photon detector group, and the polarization directions of every two adjacent converging coupling structures differ by 45 degrees.

[0027] Such as Figure 4 As shown, the single-photon polarization imaging array with convergence filtering function in this embodiment specifically refers to a single-photon polarization imaging array based on superconducting nanowires. The structure is a two-dimensional periodic arrangement of polarization detection units, in which each polarization detection side unit includes a singl...

Embodiment 2

[0032] Such as Figure 6 As shown, the single-photon polarization imaging array with a convergence filtering function in this embodiment specifically refers to a single-photon polarization imaging array based on a single-photon avalanche detector. The structure is a two-dimensional periodic arrangement of polarization detection units, in which each polarization detection side unit includes a single photon detector group and 4 converging coupling structures with different polarization directions integrated on it, and the polarization directions are horizontal and right-inclined by 45 degrees. , vertical and left tilted 45 degrees. Concentrating coupling structure and single photon detection see image 3 , the detection wavelength is 1550 nm, and the specific implementation of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0033] Such as figure 2 As shown, the converging and coupling structure is specifically: the u...

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Abstract

The invention discloses a single-photon polarization imaging array with gathering and smoothing functions. According to the structure, polarization detection units are arranged in a two-dimensional periodic mode; each polarization detection unit comprises a single photon detector set and four gathering coupling structures in different polarization directions, wherein the polarization directions are the horizontal direction, the 45-degree right inclination direction, the vertical direction and the 45-degree left inclination direction. The gathering coupling structures are the upper metal grating layer, a transparent medium gathering layer, a metal barrier layer and a lower metal reflecting light-emitting layer according to the sequence in which incident light passes through successively. The single-photon polarization imaging array has the advantages that the three functions of polarization resolution, gathering coupling and smoothing are integrated, and the array can be highly integrated with various single-photon detectors. The huge application value is achieved in the fields such as polarization encoding and single photo polarization imaging technologies in quantum information.

Description

technical field [0001] The invention relates to the field of single-photon detection and polarization imaging, in particular to a single-photon polarization imaging array with a convergence filtering function. Background technique [0002] With the development of single-photon detection technology and the continuous expansion of its application fields, the demand for high-performance single-photon detection technology is increasing, which not only puts forward higher requirements for detection sensitivity (low dark count, high quantum efficiency, short jitter Time, etc.), single-photon polarization detection, as the ultimate sensitivity photon polarization measurement technology, has extremely important application value in the fields of polarization imaging, quantum information technology, biomedicine and astronomy. However, most conventional single-photon detectors are intensity-detecting and not sensitive to polarization. In order to achieve polarization-selective detect...

Claims

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Application Information

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IPC IPC(8): H01L27/148
CPCH01L27/14812H01L27/148H01L27/14806
Inventor 李倩李沫陈飞良康健彬王旺平黄锋张晖李俊泽张健
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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