Cerenkov terahertz radiation source based on multilayer graphene surface plasma wave

A surface plasmon, terahertz radiation source technology, applied in the field of radiation source engineering, can solve the problems of low energy conversion efficiency, easy breakage, poor grating surface finish, etc.

Inactive Publication Date: 2019-05-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grating structure also faces the problems of low efficiency and difficult implementation
First of all, the graphene-loaded dielectric grating structure is a periodic system. The graphene SPPs and the field in the space are the superposition of infinitely many spatial harmonics, but the SPPs only carry a small amount of energy carried by the n

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
  • Cerenkov terahertz radiation source based on multilayer graphene surface plasma wave
  • Cerenkov terahertz radiation source based on multilayer graphene surface plasma wave
  • Cerenkov terahertz radiation source based on multilayer graphene surface plasma wave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] specific implementation plan

[0043] Embodiments consist of multiple layers of graphene coated onto a dielectric substrate with a buffer layer. figure 1 with figure 2 A schematic diagram of the structure is given. From bottom to top, there are dielectric substrate, dielectric buffer layer, multilayer graphene and moving electrons. The fabrication and processing of this structure also follows the principle from bottom to top. First, select the dielectric substrate material commonly used in the terahertz wave band, and then spin-coat the common organic buffer layer that can be purchased on the market on the substrate material, and use a glue shaker to shake the spin-coated glue evenly, and then stick it with an adhesive tape using copper-based chemistry. The multilayer graphene grown by vapor deposition is covered on the dielectric substrate with a buffer layer, and then the tape is dissolved with a solution, so that the entire structure is made. The thickness of the ...

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 Cerenkov terahertz radiation source based on a multilayer graphene surface plasma wave. The Cerenkov terahertz radiation source comprises multilayer graphene covering a substrate having a buffer layer. The multilayer graphene surface plasma wave energy can be increased by reducing the dielectric constant of the buffer layer and increasing the number of graphene layers. When the dielectric constant of the buffer layer is less than the dielectric constant of the substrate, the surface plasma wave excited by moving electrons can be directly converted into coherent Cherenkov terahertz radiation in the dielectric substrate without wave vector compensation. The radiation power density is increased by the surface plasma waves by two to three orders of magnitude. The Cerenkov terahertz radiation source can be used for developing a coherent high-power radiation source working at room temperature and covering the whole terahertz band.

Description

technical field [0001] The invention belongs to the technical field of radiation source engineering, and relates to a Cerenkov terahertz radiation source based on multilayer graphene surface plasma waves, specifically a terahertz radiation source that can be used in systems such as terahertz imaging, security inspection and communication. A source of coherent terahertz radiation. Background technique [0002] Terahertz waves lie between microwaves and infrared rays on the electromagnetic spectrum. Terahertz waves have many unique properties. First, their photon energy is low, which is lower than the bond energy of various chemical bonds, and can be used for non-destructive and safe detection of the human body and various organisms. Secondly, the wavelength of terahertz is longer than that of visible light, so it can see through smoke, etc., and has good penetration to many substances (ceramic, fat, carbon plate, cloth, plastic). Furthermore, the terahertz spectrum has a wi...

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
IPC IPC(8): H01S1/02G02B5/00
Inventor 赵陶胡旻
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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