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An integrated terahertz confocal imaging device and imaging method based on waveguide structure

A technology of a waveguide structure and an imaging device is applied in the field of terahertz confocal imaging, which can solve the problems of complex structure and large volume, and achieve the effect of broad application prospects.

Active Publication Date: 2021-10-15
NANKAI UNIV +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problems of complex structure and large volume existing in the current terahertz confocal imaging technology, and thus specifically proposes an integrated terahertz confocal imaging device and imaging method based on a waveguide structure

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  • An integrated terahertz confocal imaging device and imaging method based on waveguide structure
  • An integrated terahertz confocal imaging device and imaging method based on waveguide structure
  • An integrated terahertz confocal imaging device and imaging method based on waveguide structure

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Embodiment 1

[0035] figure 1 It is a schematic diagram of an integrated terahertz confocal imaging device based on a waveguide structure, including a terahertz radiation source 1, a terahertz waveguide 2, a terahertz half-mirror 3, a terahertz focusing lens 4, an imaging sample 5, and a metal pinhole 6. Terahertz detector 7. Data acquisition card 8. Computer 9. The terahertz radiation source 1 is used to generate terahertz signals; the terahertz waveguide 2 is used to transmit terahertz waves to reduce the absorption of terahertz signals by water vapor in the air; the terahertz semi-transparent The half mirror 3 is placed in the terahertz waveguide at 45°, which can transmit and reflect terahertz signals; the terahertz focusing lens 4 can realize the function of focusing the incident terahertz waves; The imaging sample 5 is placed at the focal plane position after the terahertz wave is focused; the metal pinhole 6 is used to filter the terahertz signal reflected back from the imaging samp...

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Abstract

An integrated terahertz confocal imaging device and imaging method based on a waveguide structure, belonging to the field of terahertz confocal imaging. The device of the invention comprises a terahertz radiation source, a terahertz waveguide, a terahertz half mirror, a terahertz focusing lens, an imaging sample, a metal pinhole, a terahertz detector, a data acquisition card and a computer. The invention integrates the discrete devices in the traditional optical path into the terahertz waveguide, makes the integration of the terahertz confocal imaging device compact, and solves the problems of complex structure and large volume existing in the current terahertz confocal imaging technology. It can realize high-resolution three-dimensional imaging of samples and obtain richer information inside the imaged samples, and has broad application prospects in non-destructive testing, biomedicine, security inspection and other fields.

Description

technical field [0001] The invention belongs to the field of terahertz confocal imaging, and in particular relates to an integrated terahertz confocal imaging device and an imaging method based on a waveguide structure. Background technique [0002] Terahertz (Terahertz, THz) wave refers to the frequency of 0.1-10THz (1THz = 10 12 Hz) electromagnetic wave, the corresponding wavelength range is 0.03-3mm, which is between microwave and infrared wave in the electromagnetic spectrum. [0003] Terahertz waves cannot penetrate polar materials such as metals and water, but have good transmission characteristics for non-polar materials such as plastics and clothing. At the same time, terahertz waves have low photon energy and will not cause ionization damage to samples , These superior characteristics make terahertz imaging technology have great application prospects in the fields of non-destructive testing, security inspection, and biomedicine. [0004] Terahertz confocal imaging...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3581G01N21/55G01N21/01
CPCG01N21/01G01N21/3581G01N21/55G01N2021/0112
Inventor 刘伟伟高翔刘晓庆戴子杰邹宝刚林列张泽宇
Owner NANKAI UNIV
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