Terahertz wave emitter with actively adjustable intensity and polarization

A transmitter and polarization technology, applied in the field of terahertz optoelectronic devices, can solve the problems that cannot fully meet the application requirements, and cannot actively control the polarization and intensity of terahertz waves

Pending Publication Date: 2019-05-28
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these devices, the polarization and intensity of terahertz waves cannot be activ

Method used

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  • Terahertz wave emitter with actively adjustable intensity and polarization
  • Terahertz wave emitter with actively adjustable intensity and polarization

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] reference figure 1 , figure 1 It is a schematic structural diagram of a terahertz wave transmitter with actively adjustable intensity and polarization according to an embodi...

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Abstract

The invention discloses a terahertz wave emitter with actively adjustable intensity and polarization. The terahertz wave emitter comprises a ferroelectric layer; a conducting layer which is arranged on one side of the ferroelectric layer; a ferromagnetic metal film which is arranged on one side, deviating from the conductive layer, of the ferroelectric layer; a non-ferromagnetic metal film which is arranged on one side, deviating from the ferroelectric layer, of the ferromagnetic metal film; a magnetic field device which is used for applying a magnetic field which is parallel to the ferromagnetic metal film in the horizontal direction to the ferromagnetic metal film, wherein the direction of the magnetic field is adjustable; one end of the voltage device is connected with the conductive layer, and the other end is connected with the non-ferromagnetic metal film. The femtosecond laser source is used for emitting femtosecond laser, the femtosecond laser sequentially penetrates through the conductive layer, the ferroelectric layer, the ferromagnetic metal film and the non-ferromagnetic metal film in the direction perpendicular to the conductive layer, and terahertz waves with adjustable intensity and polarization are generated under the control of the magnetic field device and the voltage device. The terahertz wave emitter is low in production cost, the polarization intensity canbe flexibly controlled, and practical application is facilitated.

Description

Technical field [0001] The invention relates to the technical field of terahertz optoelectronic devices, and more specifically, to a terahertz wave transmitter with active adjustable intensity and polarization. Background technique [0002] Terahertz wave (THz) generally refers to electromagnetic waves with a frequency in the range of 0.1THz-10THz. In this frequency band, it is neither completely suitable for research by optical theory, nor completely suitable for processing by microwave theory. Therefore, for a long period of time, people are The understanding of the THz band is very limited, and it is called the terahertz "blank" area. [0003] In recent years, with the development of modern technology and the efforts of researchers from various countries, THz technology has developed rapidly. The unique time-domain pulse characteristics, low energy and broadband characteristics of THz waves can provide materials science, quantum information, medical diagnosis, astronomy, and env...

Claims

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Application Information

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IPC IPC(8): H01S1/02
Inventor 陆亚林黄秋萍王建林程浩傅正平杨萌萌黄浩亮何泓川
Owner UNIV OF SCI & TECH OF CHINA
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