Terahertz amplification method for photoinduced liquid plasma grating and device thereof

A plasma and amplification device technology, applied in the field of terahertz detection, can solve the problems of slow electron movement, low ionized liquid strength, and low electron density, so as to speed up the movement speed, promote the generation of high-frequency terahertz, and increase the The effect of plasma density
CN111010789AInactive Publication Date: 2020-04-14UNIV OF SHANGHAI FOR SCI & TECH
2 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Publication Date
2020-04-14
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides a terahertz amplification method for a photoinduced liquid plasma grating and a device thereof. According to the method, two beams of ultra-short pulse laser which are mutuallycrossed in time synchronization and space are used for ionizing a liquid substance to generate a plasma grating; terahertz amplification is achieved by increasing the electron density, accelerating electrons and conducting coherent superposition on a terahertz electric field, the plasma grating terahertz amplification device facilitates implementation of a plasma grating terahertz amplification method, and therefore the generated terahertz intensity is greatly improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of terahertz detection, in particular to a photoinduced liquid plasma grating terahertz amplification method and device. Background technique

[0002] In recent years, with the development of terahertz technology, a large number of studies have proved that light-rectifying crystals, metals or air plasmas are good terahertz sources. Among them, when using optical rectifier crystals to generate terahertz, the optical rectifier crystals have a certain damage threshold, and some metals and their microstructures also have defects with low damage thresholds, which largely limit the generation of high-power terahertz waves. Terahertz waves can also be generated by using laser plasma. Ultrashort strong-field lasers are focused in the air to form plasma filaments, and terahertz pulses of cone-shaped radiation can be received in the direction of laser transmission. In order to further enhance the intensity of terahert...

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