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Terahertz wave frequency up-conversion detector based on highly excited atoms

An excited state and wave frequency technology, applied in the field of terahertz wave frequency up-conversion detectors, can solve the problems of low stability and sensitivity of up-conversion devices

Pending Publication Date: 2021-05-07
XIAN UNIV OF TECH
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Problems solved by technology

[0023] The purpose of the present invention is to provide a terahertz frequency up-conversion detector based on atoms in a highly excited state, which solves the problems of low stability and sensitivity of existing up-conversion devices

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041]The invention provides a terahertz wave frequency up-conversion detector based on atoms in a highly excited state, which can up-convert the terahertz wave to a visible light frequency band for detection.

[0042] The lack of room temperature THz wave detectors with high sensitivity, fast response and low price is one of the bottlenecks restricting the development of THz technology. Due to the particularity of THz waves, materials that can interact with them and exhibit obvious physical effects in nature are very limited, which limits the development of existing THz wave detection technologies. Using frequency up-conversion technology to transform the THz band to the near-infrared, visible or ultraviolet band is an effective method to greatly improve the sensitivity of THz wave detectors. However, the currently used frequency up-convers...

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Abstract

The invention discloses a terahertz wave frequency up-conversion detector based on highly excited state atoms, which comprises an off-axis parabolic mirror, a terahertz lens is arranged on the spherical surface of the off-axis parabolic mirror at the position of a main axis, and a terahertz generator is arranged on one side, outside the off-axis parabolic mirror, of the terahertz lens. The focus, located in the off-axis parabolic mirror, of the terahertz lens coincides with the focus of the off-axis parabolic mirror in position and is provided with a high-excitation-state atom generating device, a lens is arranged at the end, away from the terahertz lens, of the off-axis parabolic mirror, and a photomultiplier is arranged on the main axis, located on the side outside the off-axis parabolic mirror, of the lens. The photomultiplier is connected with a signal acquisition device connected with the terahertz generator. According to the terahertz wave frequency up-conversion detector based on the highly excited atoms, the problem that an existing up-conversion device is low in stability and sensitivity is solved.

Description

technical field [0001] The invention belongs to the technical field of terahertz detection devices, and in particular relates to a terahertz wave frequency up-conversion detector based on atoms in a highly excited state. Background technique [0002] Terahertz (THz) electromagnetic waves are electromagnetic radiation with frequencies ranging from 100 GHz to 10 THz and wavelengths ranging from 3 mm to 30 microns, between millimeter waves and infrared light. Due to its unique properties, it has broad application prospects in many important fields such as physics, chemistry, electronic information, life science, material science, astronomy, atmospheric and environmental monitoring, communication radar, national security and anti-terrorism, so it has been favored by domestic and foreign governments and Highly valued by academic organizations. In recent years, THz science and technology have developed vigorously in many fields, especially THz spectroscopy and THz imaging technol...

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Application Information

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IPC IPC(8): G01V8/10
CPCG01V8/10
Inventor 侯磊施卫孙夏思杨磊
Owner XIAN UNIV OF TECH
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