An intelligent test device for high-temperature superconducting terahertz radiation sources based on different bias conditions

Abstract

The invention discloses an intelligent testing device for a high-temperature superconducting terahertz radiation source based on different bias conditions, which includes a test bench. A sealed shell is fixedly installed on the left side of the upper surface of the platform, and the low-temperature refrigeration system includes a Stirling refrigerator. A cooling chamber is installed at the output end of the Stirling refrigerator, and a liquid nitrogen cooling tank is installed on the right side of the cooling chamber. An intelligent testing device for a high-temperature superconducting terahertz radiation source based on different bias conditions according to the present invention is used in conjunction with an improved Stirling refrigerator and a liquid nitrogen cooling tank, and the radiation source is installed on the ground through a copper support Inside the cooling chamber of the Stirling refrigerator, the computer controls the liquid nitrogen flow switch of the liquid nitrogen cooling tank through the temperature controller made by the laboratory to control the flow of liquid nitrogen and the cooling efficiency of the Stirling refrigerator, and accurately control the cooling chamber internal temperature.

Description

technical field [0001] The invention relates to the field of testing devices, in particular to the field of an intelligent testing device for a high-temperature superconducting terahertz radiation source based on different bias conditions. Background technique [0002] As we all know, terahertz waves include electromagnetic waves with a frequency of 0.1 to 10 THz, and this term applies to the range between the high-frequency edge (300 GHz) of the millimeter-wave band of electromagnetic radiation and the low-frequency far-infrared spectral band edge (3000 GHz). Frequency, the radiation of the corresponding wavelength ranges from 0.03mm to 3mm in this frequency band. During the research on the high-temperature superconducting terahertz radiation source, it was found that the radiation performance of the sample was significantly affected by the DC bias. Under different bias conditions Under different conditions, the electrical transport, frequency linewidth, radiation stability...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a high-temperature superconducting terahertz radiation source intelligent testing device based on different bias conditions, which can effectively solve the problems in the background technology: first, the Stirling refrigerator is provided with a cold head frame, and the radiation If the cooling source is placed under the cold head frame of the Stirling refrigerator, cooling may lead to unbalanced cooling on the surface of the radiation source, resulting in poor cooling effect. Secondly, the cooling method of the Stirling refrigerator is relatively simple and cannot be quickly Accurately adjust the refrigeration temperature. Finally, using a Stirling refrigerator to spray liquid helium to the radiation source may cause the terahertz wave emitted by the radiation source to be scattered by the liquid helium molecules, thus affecting the power of the terahertz wave.

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