Portable terahertz time domain spectrograph

A technology of terahertz time domain and spectrometer, which is applied in the field of new terahertz time domain spectrometer structure, can solve the problems of slow spectrum detection speed, large system volume, poor portability, etc., achieve good measurement effect, increase internal volume, reduce The effect of plane size

Active Publication Date: 2017-06-13
SHANGHAI LANGYAN OPTOELECTRONICS TECH +1
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  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current terahertz time-domain spectroscopy technologies are established in the laboratory, and there are defects such as large system size, poor portability, slow spectral detection speed, and complicated operation.

Method used

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  • Portable terahertz time domain spectrograph
  • Portable terahertz time domain spectrograph
  • Portable terahertz time domain spectrograph

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] The femtosecond pulsed fiber laser module, the optical delay line in the terahertz detection module, the lock-in amplifier in the data processing and instrument control module, etc. involved in the present invention belong to the prior art.

[0031] Such as Figure 1 to Figure 4 As shown, the portable terahertz time-domain spectrometer of the present invention consists of a femtosecond pulse fiber laser module 1 (in the prior art, it can be a femtosecond pulse fiber laser), an optical path ...

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Abstract

The invention provides a portable terahertz time domain spectrograph which comprises a femtosecond pulse laser module, a light path climbing module, a terahertz emitting module, a terahertz detection module, a data processing and instrument control module and a power module, wherein the femtosecond pulse laser module is used for outputting terahertz pump light and detecting light; the light path climbing module is used for controlling a terahertz transmission light path; the terahertz emitting module is used for generating terahertz pulse; the terahertz detection module is used for detecting terahertz spectral information of a carried sample; the data processing and instrument control module is used for collecting and analyzing terahertz time-domain spectroscopy data; the power module is used for supplying power. The portable terahertz time domain spectrograph has the advantages that the structural features of a gold plating off-axis paraboloid lens are utilized to spatially design the terahertz transmission light path into an upper and lower two-layer folding structure and the plane size of the terahertz time domain spectrograph is greatly reduced.

Description

technical field [0001] The invention relates to a portable terahertz time-domain spectrometer. The invention belongs to the technical field of a novel terahertz time-domain spectroscopic instrument structure. Background technique [0002] Terahertz (THz) waves are a special frequency band between infrared rays and millimeter waves, usually referring to frequencies between 0.1THz and 10THz (1THz=10 12 Hz). The special properties of terahertz waves give communication (broadband communication), radar, electronic countermeasures, electromagnetic weapons, astronomy, medical imaging (unmarked genetic inspection, imaging at the cellular level), nondestructive testing, safety inspection (biochemical inspection) ) and other fields have had a profound impact. Compared with traditional light sources, terahertz pulsed light sources mainly have the characteristics of transient, coherent, broadband, low energy, penetration of some materials, and fingerprints. In the past ten years, te...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01J3/28
Inventor 曾和平南君义李敏
Owner SHANGHAI LANGYAN OPTOELECTRONICS TECH
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