Self-rotation terahertz transmitter and terahertz wave generating method

A transmitter and terahertz technology, applied in the direction of solid-state lasers, etc., can solve the problems of small spin Hall angle, inability to generate instantaneous charge flow, and insignificant terahertz radiation effect, and achieve wide pulse width, simple structure and low cost. low effect
CN109672071APending Publication Date: 2019-04-23BEIHANG UNIV
5 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN ¡ China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2019-04-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The embodiment of the invention provides a self-rotation terahertz transmitter and a terahertz wave generating method. The self-rotation terahertz transmitter at least comprises a femtosecond laser, atopological structure film and a magnetic field generator, wherein pumping light output by the femtosecond laser passes through the topological structure film to generate terahertz waves on the basisof the magnetic field direction of the magnetic field generator; the topological structure film comprises a topological insulation body layer, a ferromagnetic layer and a non-ferromagnetic layer; thetopological insulation body layer, the ferromagnetic layer and the non-ferromagnetic layer are sequentially arranged and attached and form a heterogeneous structure. The transmitter provided by the embodiment of the invention has the advantages that the structure is simple; the transmission principle is simple; the transmission frequency is high; the pulse width is wide; the cost is low.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] Embodiments of the present invention relate to the technical field of terahertz pulse generation, and in particular to a spin terahertz emitter and a method for generating terahertz waves. Background technique

[0002] Terahertz (THz) waves are between far-infrared and microwaves, covering the frequency range from 0.1 to 10 THz. Hertzian pulses are resonant probes of the excitation of many low-energy elements in condensed matter. Terahertz waves have many unique properties, such as transmission, safety, strong spectral resolution, etc. These properties endow terahertz waves with a wide range of application prospects, including terahertz radar and communication, spectroscopy and imaging, non-destructive flaw detection, security detection etc.

[0003] However, terahertz applications still have a strong demand for terahertz radiation sources with high efficiency, high power, low cost, and room temperature operation. At present, the commonly used terah...

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