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Terahertz camera, terahertz imaging system and application

A terahertz imaging and terahertz camera technology, applied in instruments, electrical components, analytical materials, etc., can solve the problems of limited response speed detection principle, limited photosensitive area, high cost and other problems, achieve low cost, high detection sensitivity, cost reduced effect

Active Publication Date: 2020-06-23
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing terahertz cameras are extremely expensive, and generally have a large volume, limited photosensitive area, and the response speed is also limited by the detection principle.

Method used

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  • Terahertz camera, terahertz imaging system and application
  • Terahertz camera, terahertz imaging system and application
  • Terahertz camera, terahertz imaging system and application

Examples

Experimental program
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Embodiment 1

[0066] This embodiment is used to illustrate the structure of the terahertz camera of the present invention.

[0067] Such as figure 1 As shown, the present invention provides a terahertz camera, comprising: a P-N junction cell array 1 and a processing module 2;

[0068] The P-N junction unit array 1 includes a plurality of P-N junction units 11, figure 1 The processing module 2 is electrically connected to the P-N junction unit array 1, and the processing module 2 is specifically electrically connected to each P-N junction unit 11;

[0069] The P-N junction unit array 1 is used to convert the received terahertz wave into a voltage signal, and the processing module 2 is used to determine the spot profile of the terahertz wave according to the voltage signal.

[0070] Specifically, the P-N junction unit mentioned in the embodiments of the present invention refers to a device capable of converting terahertz waves into voltage signals, and the P-N junction unit array integrated...

Embodiment 2

[0074] This embodiment is used to illustrate the structure of the terahertz camera of the present invention.

[0075] On the basis of Embodiment 1, the terahertz camera provided in this embodiment further includes a display module; the display module is electrically connected to the processing module, and the display module is used to display the terahertz wave spot profile to display. The display module used in this embodiment is a computer monitor. The display module is used for displaying the light spot profile of the terahertz wave, that is, imaging and displaying the light spot profile of the terahertz wave determined by the processing module.

Embodiment 3

[0077] This embodiment is used to illustrate the structure of the processing module in the terahertz camera of the present invention.

[0078] The terahertz camera processing module provided in the embodiment of the present invention specifically includes a plurality of processing sub-modules, and the plurality of processing sub-modules are in one-to-one correspondence with the plurality of P-N junction units and are electrically connected;

[0079] Correspondingly, the voltage signal includes a plurality of sub-voltage signals, and the plurality of sub-voltage signals are in one-to-one correspondence with the plurality of P-N junction units;

[0080] Each P-N junction unit is used to receive part of the terahertz wave in the terahertz wave, and convert the received part of the terahertz wave into a corresponding sub-voltage signal;

[0081]Each processing sub-module is used to determine the intensity distribution of the partial terahertz wave received by the corresponding P-N...

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Abstract

The embodiment of the invention provides a terahertz camera and a terahertz imaging system. The terahertz camera comprises a P-N junction unit array and a processing module. The P-N junction unit array comprises a plurality of P-N junction units, and the processing module is electrically connected with each P-N junction unit. The P-N junction unit array is used for converting received terahertz waves into voltage signals, and the processing module is used for determining light spot contours of the terahertz waves according to the voltage signals obtained through conversion of the P-N junctionunit array. In the embodiment of the invention, the terahertz camera is constructed by adopting the P-N junction unit array, and the camera is not limited by the temperature and the surrounding environment. The camera is high in imaging speed, small in size, easy to operate and low in cost. The P-N junction unit has high detection sensitivity to terahertz waves, even if weak terahertz waves are focused, high-quality focusing light spots can be obtained on the P-N junction unit array, and therefore imaging of an object to be imaged can be clearer.

Description

technical field [0001] The invention belongs to the technical field of photoelectric devices, and in particular relates to a terahertz camera, a terahertz imaging system and applications. Background technique [0002] Terahertz waves refer to electromagnetic waves with frequencies in the range of 0.1THz to 30THz, and wavelengths in the range of 0.03 to 3mm. They are located between far-infrared and millimeter waves on the electromagnetic spectrum. They are used in wireless communications, public safety, astronomy, medical imaging and It has important applications in many fields such as ultrafast spectroscopy. The special position of the frequency band of the terahertz wave endows the frequency band with special properties. For example, the terahertz frequency corresponds to the vibration energy level and rotational energy level of biological macromolecules, and corresponds to the hydrogen bond energy of water molecules and the energy of van der Waals force. , Many biomolecu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3581H01L31/103
CPCG01N21/3581H01L31/103
Inventor 马景龙吴晓君李玉同
Owner INST OF PHYSICS - CHINESE ACAD OF SCI