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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 high manufacturing cost and complex structure, and achieve the effects of low cost, high sensitivity and signal-to-noise ratio, and low noise equivalent power

Active Publication Date: 2012-07-04
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these schemes are complex in structure and high in manufacturing cost

Method used

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The terahertz wave detector of the present invention is used for detecting terahertz waves from a terahertz wave radiation source. figure 1 A schematic structural diagram of an embodiment of the terahertz wave detector of the present invention is shown. exist figure 1 Among them, the terahertz wave detector includes a substrate 4 and a thin film 3 of superconducting material attached to the substrate 4 . The substrate 4 and the thin film of superconducting material 3 can be arranged in a cryostat 2, wherein the cryostat 2 is used to provide a temperature low enough to enable the thin film of superconducting material 3 to be in its superconducting transition temperature region. exist figure 1 Among them, the cryostat 2 is provided with a window 1, and the terahertz wave radiation to be detected from a terahertz wave radiation source (not shown) can pass thro...

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Abstract

The invention discloses a terahertz wave detector, which is used for detecting terahertz waves coming from a terahertz wave radiation source. The terahertz wave detector comprises a substrate and a superconducting-material thin film which is attached onto the substrate, wherein the superconducting-material thin film is of a single long-range line structure which extends on the substrate in a zigzag and compact way; and in the working process, the superconducting-material thin film is in a superconducting transformation temperature zone and is directly irradiated by the terahertz waves to be detected, and the thermal radiation of the terahertz waves is received through the superconducting-material thin film to enable resistance to be obviously changed to detect the terahertz waves. The terahertz wave detector has the advantages that the sensitivity and the signal-to-noise ratio are high, the noise equivalent power is low, the structure is simple and the stability is good; and the terahertz wave detector is particularly suitable for detecting low-power and large-beam-spot terahertz wave radiation sources.

Description

technical field [0001] The present invention relates to the technical field of terahertz wave detection, and more specifically, to a terahertz wave detector based on a superconducting material. Background technique [0002] Terahertz (THz) radiation is electromagnetic radiation from 0.1THz to 10THz (photon energy from 0.41meV to 41.4meV, wavelength from 30μm to 3mm), which is between infrared and microwave radiation. , The transition zone between macro and micro. The THz band is a very scientifically valuable but undeveloped electromagnetic radiation area. Its research involves physics, optoelectronics and material science, etc. It has broad fields in imaging, medical diagnosis, environmental science, information, national security and basic physics research. application prospect and application value. In the development and utilization of terahertz band, the detection of terahertz signal is a very important work. Compared with shorter-wavelength optical band electromagne...

Claims

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Application Information

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IPC IPC(8): G01N21/17G01J5/20
Inventor 刘瑞元宋小会王云平
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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