Device for detecting terahertz absorption spectra of gas

An absorption spectrum and detection device technology, which is applied in the field of gas terahertz absorption spectrum detection devices, can solve problems such as low resolution, high cost, and complex detection system, and achieve high frequency resolution, low cost, and simple system Effect

Inactive Publication Date: 2016-06-15
NANJING UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In view of the deficiencies in the prior art, the purpose of the present invention is to provide a gas terahertz absorption spectrum detection device, which overcomes the shortcomings of traditional terahertz gas detection systems such as complexity, high cost, and low resolution, and is simple and practical

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for detecting terahertz absorption spectra of gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the detection device for gas terahertz absorption spectrum, the main structure includes a continuously adjustable terahertz generator 1, a chopper 2, a pair of off-axis parabolic mirrors 3, a vacuum gauge 4, a gas chamber 5, and a gas chamber inlet 6. Gas chamber gas outlet 7 and GolayCell detector 8 .

[0016] Continuously adjustable terahertz generator 1, mainly composed of a high-temperature superconducting BSCCO terahertz radiation source and a Stirling refrigerator for providing a low-temperature environment, used to generate continuously adjustable terahertz signals; chopper 2, used for The terahertz signal radiated from the Stirling window is modulated; the off-axis parabolic mirror 3 is used to converge the modulated terahertz beam; the vacuum gauge 4 is used to detect the gas pressure inside the gas chamber; the gas chamber 5...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a gas terahertz absorption spectrum detection device, which comprises a continuously adjustable terahertz generator, a chopper, an off-axis parabolic mirror, a gas cavity and a GolayCell detector; the terahertz beam generated by the terahertz generator passes through Chopper modulation, the modulated signal is converged and reflected by an off-axis parabolic mirror, the converged beam passes through the gas cavity, and then converged to the terahertz detector by another off-axis parabolic mirror. The invention has high frequency resolution, low cost, simple system, easy portability, greatly simplifies the complexity of the existing system, and is easier to popularize. The cost is saved, the terahertz loss is low, and the terahertz absorption spectrum of gas can be detected simply and conveniently, which has broad application prospects and research value.

Description

technical field [0001] The invention relates to the technical field of terahertz generators and applications, in particular to a detection device for gas terahertz absorption spectrum. Background technique [0002] Terahertz (terahertz, usually referred to as THz) waves usually refer to electromagnetic waves with a frequency between 0.1 THz and 30 THz (M. Tonouchi, Nature Photonics, 1 (2007) 97). Compared with electromagnetic waves in other frequency bands, terahertz waves have the characteristics of low photon energy and high spatiotemporal coherence, making them have broad application prospects in radio astronomy, biology, remote sensing, communication and other fields. [0003] In the early days, due to the lack of effective means of generating and detecting terahertz radiation, electromagnetic waves in this band were not fully studied and applied. In recent years, the research on the terahertz wave band has become more and more in-depth, and a variety of methods for exc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/3581
CPCG01N21/3504G01N21/3581
Inventor 王华兵孙汉聪李军吴培亨
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap