Terahertz imaging method and system based on atomic gas chamber

A technology of terahertz imaging and atomic gas chamber, which is applied in the field of terahertz communication and can solve the problems of low imaging efficiency, poor imaging effect, and long time-consuming diffraction effect scanning.
CN113405988APending Publication Date: 2021-09-17清远市天之衡量子科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
清远市天之衡量子科技有限公司
Publication Date
2021-09-17

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Abstract

The embodiment of the invention provides a terahertz imaging method and system based on an atomic gas chamber, and the method achieves the real-time imaging of terahertz field space distribution converted into light wave space distribution through laser with two wavelengths for Rydberg atoms excited in the atomic gas chamber. Therefore, the high-resolution real-time imaging terahertz camera based on the atoms is realized, the atoms are incoherently transferred from an initial Rydberg state to another Rydberg state, when the atoms are deexcited from the Rydberg state, fluorescence generated by spontaneous radiation is in a visible wave band, the spatial distribution of fluorescence intensity is consistent with the distribution of a terahertz field before conversion, therefore, the obtained visible light image is the terahertz image before conversion. The emitted fluorescence can be detected by using a CCD (visible light imaging), so that terahertz imaging is obtained.
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Description

technical field

[0001] Embodiments of the present invention relate to the technical field of terahertz communication, and in particular to a terahertz imaging method and system based on an atomic gas chamber. Background technique

[0002] As one of the key technologies of terahertz, terahertz imaging has a wide range of applications in security inspection and non-destructive testing due to some excellent properties of terahertz. Terahertz wave refers to the electromagnetic wave with a frequency in the range of 0.1THz to 10THz and a wavelength in the range of 0.03mm to 3mm. Because its photons have many superior characteristics such as low energy, fingerprint spectrum, and high transparency, they are used in physics and chemistry. , biology and other fields have great application value. However, the spatial resolution of traditional imaging technology is limited by the diffraction limit, and it is usually difficult to break through the millimeter level. Therefore, it also gr...

Claims

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