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Photon camera ultra-high-speed single-photon imaging device

An imaging device and ultra-high-speed technology, applied in the direction of instruments, etc., can solve the problems that the speed of taking pictures cannot meet the requirements, cannot meet the requirements, cannot reach the sensitivity of single-photon detection, etc., and achieve the effect of reducing distortion

Active Publication Date: 2017-10-13
CHENGDU LINXINTAILAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Currently, photon cameras generally use imaging solutions such as EMCCD to achieve imaging. It can achieve 10,000 pictures per second at high speed, and can take pictures in low light , but some applications cannot meet the requirements. For example, each pixel only needs to distinguish whether there is a single photon or a group of photons incident, and does not need to know the number, and the number of photos per second must be at least 1 billion
In this case, it is not suitable to use an ordinary photon camera. First, the speed of taking pictures is far below the requirements. Second, it cannot use the continuous triggering of single photon incident, that is, one photon or a group of photons at a time is detected. Incidence, i.e. generate a photo
Third, it cannot achieve single-photon detection sensitivity

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0040] The set detection time T is 1ns, that is, a photo is collected every 1ns, such as figure 2 As shown, the horizontal axis and the vertical axis are the rows and columns corresponding to the channels of the array detector, the black dots are the pixels (channels) with photon incident, and the white dots are the pixels (channels) without photon incident. When the device is running, many single photons are incident on a surface, which is the photon array detector. The distribution of these single photons is discretely distributed on the corresponding position of this surface within the time T, and the array position recorder Set the corresponding position of a single photon to 1; the position of no photon incident is 0. This enables extremely high-speed (1ns) imaging with single-photon sensitivity per camera pixel.

Embodiment 2

[0042] The system adopts an automatic trigger method, that is, when a light pulse signal is received, a photo is recorded. In most cases, it is generally used to detect the distribution track of photons emitted by an object relative to a plane relative to time. Generally speaking, There is only one photon, or cloud of photons, at a time. Set the time T through Ethernet. The time T in this example is 1ns. The collection is triggered when there is a photon incident. The collection time is T. If there is no photon incident, no collection is performed. The corresponding bit of the position recorder will become "1", and a black point will appear on the photo, (if there are several consecutive incidents within the time T after triggering the acquisition, then this will appear at the corresponding position on the photo Several points, generally this kind of situation is rare, the following photos are taken as an example of only one point collected by one trigger). After obtaining th...

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Abstract

The invention discloses a photon camera ultra-high-speed single-photon imaging device, which comprises a photon array detector, an array threshold value generator, a complete machine control and processing transmission unit, and an array position recorder. The invention realizes the imaging of the photon camera capable of realizing single-photon sensitivity at extremely high speed.

Description

technical field [0001] The invention relates to an imaging device of a photon camera, in particular to an ultra-high-speed single-photon imaging device of the photon camera. Background technique [0002] In the fields of particle tracking, quantum radar, star detection, radiation imaging, etc., when the detected optical signal reaches the single-photon level, that is, when the discrete single-photon incident state appears, its imaging will become very difficult. [0003] Single-photon detection technology is used in high-resolution spectral measurement, non-destructive material analysis, high-speed phenomenon detection, precision analysis, atmospheric pollution measurement, bioluminescence, radiation detection, high-energy physics, astronomical photometry, optical time-domain emission, quantum key Distribution systems and other fields have a wide range of applications. Because of its important position in the high-tech field, the single photon detector has become one of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J11/00
Inventor 曾桥
Owner CHENGDU LINXINTAILAI TECH CO LTD
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