Terahertz electric field measurement method, system and device

A technology of electric field measurement and terahertz, which is applied in the direction of electrostatic field measurement, etc., can solve the problems of high cost and high-quality GaP electro-optic crystals, and the inaccurate measurement of terahertz electric field, etc., and achieve the effect of precise measurement and wide measurement range
CN112285444APending Publication Date: 2021-01-29XIAN INSTITUE OF SPACE RADIO TECH
0 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIAN INSTITUE OF SPACE RADIO TECH
Publication Date
2021-01-29

Smart Images

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

Abstract

The invention provides a terahertz electric field measurement method, system and device. The method comprises the steps that a first laser system emits first-stage pump light and detection light; a second laser system emits high-power pump light; coupling light is generated based on the high-power pump light; based on the first-stage pump light, the detection light and the coupling light, an atomair chamber is reversely entered to prepare Rydberg atoms; a terahertz source is acted on the atomic air chamber; and the electric field of the terahertz source is measured by detecting the atomic spectrum of the Rydberg atoms. According to the invention, alkali metal atoms can be prepared into a Rydberg state, and electric field measurement of sub-THz wave and THz wave radio frequency fields is realized. A Rydberg EIT measurement method does not need a cold atom vacuum system under the action of a laser, and can be operated at a room temperature. Advantages of a wide measurement range, smalland portable experimental device and the like are achieved, and the method is more practical, and realizes the precise measurement of the multi-wave frequency of the THz frequency band.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of quantum precision measurement, in particular to a terahertz electric field measurement method, system and device. Background technique

[0002] In the electromagnetic spectrum of various frequency bands, compared with microwave, X-ray and nuclear magnetic resonance detection, THz detection can not only give the density information of the object, but also give the physical property information, such as dielectric constant, refractive index, absorption coefficient, etc. . Due to the special nature of THz, THz technology has great scientific research value and application prospects in many aspects such as object imaging, medical diagnosis, and military radar. Compared with traditional electromagnetic wave imaging, many characteristics of THz wave make it very suitable for imaging applications.

[0003] The existing terahertz electric field measurement technology mainly uses a terahertz electro-optic crystal 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