Method and system for realizing continuous terahertz spectrum detection

A spectral detection and terahertz technology, applied in the field of optical applications, can solve the problems of low spectral resolution and low terahertz signal intensity, and achieve the effect of improving spectral resolution and reducing complexity

Inactive Publication Date: 2015-03-25
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method and system for realizing a continuous terahertz spectral detector, which is used to solve the problems of low terahertz signal intensity and low spectral resolution in the prior art

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  • Method and system for realizing continuous terahertz spectrum detection
  • Method and system for realizing continuous terahertz spectrum detection
  • Method and system for realizing continuous terahertz spectrum detection

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[0049] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0050] Please refer to attached picture. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be change...

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Abstract

The invention provides a method and a system for realizing continuous terahertz spectrum detection. A pair of high-stability single longitudinal mode near-infrared lasers serve as seed light sources, a laser signal is modulated by utilizing optical fibers, and continuous terahertz waves are radiated outwards under external bias potential by virtue of an optical mixer; and the terahertz waves are subjected to coherent detection at a signal receiving end by adopting a photoconductive switch and an antenna. The temperature modulation is performed on the lasers, and wide bandwidth difference frequency continuous terahertz radiation output is realized. Compared with a common terahertz time-domain impulse spectral system, the system has the advantages that the spectral resolution acquired by the technology is greatly improved, and the system has an excellent effect of promoting the development of terahertz spectroscopy and related fields.

Description

technical field [0001] The invention relates to the technical field of optical applications, in particular to a method and system for realizing continuous terahertz spectrum detection. Background technique [0002] In recent years, with the rapid development of terahertz technology in various fields, the application research of terahertz wave spectroscopy technology has become more and more extensive. Due to the many advantages of terahertz wave itself, terahertz application technology has been extended to all aspects of real life. For example, in terms of public safety detection, terahertz waves can pass through some common infrared-impenetrable materials, such as non-polar materials such as plastic packaging, envelopes and semiconductor media, so they are very suitable for the detection of concealed objects; more importantly, Yes, both drugs and TNT have their special terahertz fingerprints. Using terahertz spectroscopy technology can improve the detection efficiency of d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3586
Inventor 周涛曹俊诚吴义东
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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