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Terahertz wave detector

A detector and terahertz technology, applied in the field of terahertz wave detection, can solve the problems of slow response speed and high price, achieve the effect of wide response band, reduce production cost and improve response speed

Active Publication Date: 2014-07-02
安徽太测临峰光电科技股份有限公司
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a terahertz wave detector to solve the problems of high price and slow response in the prior art

Method used

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] A terahertz wave detector, see figure 1 , comprising chopper 1, polyethylene lens 2, neon lamp 3, neon lamp 3, DC power supply 4, ammeter 5 forming a closed loop; the output terminal of neon lamp 3 forming a closed loop with capacitor 6, amplifier 7 and oscilloscope 8; chopping The chopper 1 is placed in front of the polyethylene lens 2, the neon lamp 3 is placed at the focal position of the polyethylene lens 2, and the modulation signal of the chopper 1 is also input into the oscilloscope 8 as a reference signal.

[0025] The present invention has improved neon lamp 3 structure:

[0026] (1) The glass wall of the neon lamp 3 has a strong absorption of terahertz electromagnetic waves. Therefore, the present invention uses a precision polishing machine to polish the glass wall of the neon lamp 3 to reduce the thickness so that the poli...

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Abstract

A terahertz wave detector comprises a chopper (1) and a polyethylene lens (2) and is characterized by further comprising a neon lamp (3), wherein the neon lamp (3), a direct-current power supply (4) and an ampere meter (5) form a closed loop circuit. The output end of the neon lamp (3), a capacitor (6), an amplifier (7) and an oscilloscope (8) or a phase-locked amplifier (11) form a closed loop circuit. The chopper (1) is arranged in front of the polyethylene lens (2), the neon lamp (3) is arranged at the focus position of the polyethylene lens (2), and a modulating signal of the chopper (1) is input into the oscilloscope (8) to serve as a reference signal. The terahertz wave detector uses the cheap neon lamp as a detecting element, thereby reducing the production cost and improving the response speed. In addition, a response wave band is wide. When the power of terahertz waves is high, the detector is not damaged, and an equilibration phenomenon does not occur.

Description

technical field [0001] The invention belongs to the technical field of terahertz wave detection and relates to a terahertz wave detector. Background technique [0002] Terahertz (THz) electromagnetic waves usually refer to far-infrared electromagnetic radiation with a wavelength in the range of 3mm-30μm (100GHz-10THz). , low energy, etc., have received widespread attention. [0003] Many materials that are opaque to infrared and visible light are transparent to terahertz waves, so terahertz wave imaging technology has been developed. At present, this technology has been applied in safety inspection, non-destructive testing, quality control and other fields. In the continuous terahertz wave imaging system, although the imaging system using a terahertz source with a fixed frequency and a single detector cannot provide the depth, frequency spectrum and time domain information of the material, it is small in size, simple in structure and relatively low in price. , so the conti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/42
Inventor 侯磊施卫
Owner 安徽太测临峰光电科技股份有限公司
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