Portable microwave electric field measuring device based on Rydberg atoms

Abstract

The invention belongs to the crossing field of optical metamaterials and microwave electric field measurement, and particularly relates to a portable microwave electric field measuring device based onRydberg atoms. The portable microwave electric field measuring device comprises a first laser, a first optical fiber polarizer, a first optical fiber interface, a first GRIN lens, a second laser, a second optical fiber polarizer, a second optical fiber interface, a second GRIN lens, a metasurface structure, a photoelectric detector and a vacuum alkali metal atom air chamber. The portable microwave electric field measuring device has the advantages that the integration and miniaturization of the atom air chamber are realized; an all-dielectric material is used for design, so that the measurement precision is improved; during measurement, an optical path does not need to be adjusted, and an optical fiber is connected, so that the portable microwave electric field measuring device is very convenient to use, small in size, convenient to place and suitable for various complex environments; and the optical fiber is used for transmitting light, the limitation of the laser is eliminated, theportability of the atomic gas chamber is realized, and the practicability of the system is greatly improved.

Description

technical field [0001] The invention belongs to the intersection field of optical metamaterials and microwave electric field measurement, in particular to a portable microwave electric field measurement device based on Rydberg atoms. Background technique [0002] With the continuous development of laser technology, the research of microwave electric field measurement using the quantum coherence effect of Rydberg atoms has been greatly promoted. The microwave electric field measurement experimental system based on Rydberg atoms is mainly composed of three key components: atomic gas chamber, laser, and photodetector. In the Rydberg atomic system used to detect microwave electric fields, alkali metal atoms are often used as excitation objects, which have requirements for the spot size and polarization state of the laser light entering the gas cell. The atomic gas chamber is usually a sealed transparent glass chamber, which is filled with alkali metal vapor and inert buffer gas...

AI Technical Summary

Problems solved by technology

But this solution still needs a dichroic mirror to separate the two laser beams, and it still needs cumbersome adjustments in practical applications

[0005] The traditional optical path design also relies on the optical platform, which takes up a lot of space and is complicated to adjust, which imposes great restrictions on the use environment, and some metal devices on the optical platform will also have a great impact on the measurement of the microwave field

Therefore, using the traditional optical path design scheme, the various advantages of Rydberg atoms in measuring the microwave field cannot be brought into play

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