Angle measurement system and method based on Rydberg atomic electromagnetic induction transparency effect
An electromagnetic induction transparent and angle measurement technology, applied in the direction of measuring devices, using electromagnetic means, using electrical devices, etc., can solve the problems of affecting measurement accuracy, space electromagnetic wave disturbance, and inability to obtain electromagnetic wave space orientation information, etc., to improve measurement accuracy, The effect of high sensitivity
Active Publication Date: 2021-07-27
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
The disadvantage of these angle measurement systems is that the antenna of the angle measurement system is composed of metal, dielectric or metal-dielectric mixed materials, these materials will affect the boundary conditions of the electromagnetic field, disturb the electromagnetic wave in space, and then affect the measurement accuracy
In the field of measurement, scholars have proposed a speed measurement system and method based on Rydberg atoms, see document [CN110488265A-radar speed measurement system and method based on electromagnetically induced transparency effect of Rydberg atoms], but this system only uses one atom Vapor bubbles, unable to obtain spatial orientation information of electromagnetic waves, therefore, the system cannot be used for angle measurement
[0004] So far, there has been no public report on the use of Rydberg atoms for angle measurement
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] figure 1 Shown is the embodiment 1 of the angle measurement system based on the Rydberg atomic electromagnetic induction transparency effect, including lasers 1, 2, beam splitters 3, 4, dichroic mirrors 8, 13, mirrors 5, 6, 10, 11, 15, 16, 17, atomic vapor bubbles 7, 12, photodetectors 9, 14.
[0018] The atomic steam bubble 7 is the same as the atomic steam bubble 12, and is a closed glass vessel filled with alkali metal atom vapor, and the alkali metal atom may be cesium atom, rubidium atom, etc. The shapes of the atomic steam bubbles 7 and 12 can be cubes, cuboids or cylinders. The installation positions of atomic steam bubble 7 and atomic steam bubble 12 meet the following conditions:
[0019] 1) The distance d between the center of the atomic vapor bubble 7 and the center of the atomic vapor bubble 12 is between λ / 2˜λ, where λ is the wave...
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The invention provides an angle measurement system based on the Rydberg atomic electromagnetic induction transparency effect. The technical solution is: the system includes two lasers with different wavelengths, two identical atomic vapor bubbles, and two identical photodetectors. The laser light emitted by the first laser is divided into two identical sub-laser beams, each of which passes through an atomic vapor bubble and then reflected to a photodetector; the laser light emitted by the second laser is divided into two identical sub-laser beams. In the laser beam, two sub-laser beams each pass through an atomic vapor bubble. The positions of the two atomic steam bubbles are mirror-symmetrical, and the axis of symmetry is perpendicular to the connecting line between the centers of the two atomic steam bubbles and passes through the midpoint of the above-mentioned connecting line. The invention has the characteristics of compact size, high measurement precision and high measurement sensitivity.
Description
technical field [0001] The present invention relates to the field of angle measurement, in particular to an angle measurement system and method based on Rydberg atomic electromagnetically induced transparency (Electromagnetically induced transparency, EIT). Background technique [0002] Today, many scenarios require the use of angle measurement systems, such as indoor positioning, passive detection of targets, electromagnetic spectrum monitoring, etc. There are many types of existing angle measurement systems, among which the widely used ones include the amplitude comparison angle measurement system and the phase comparison angle measurement system. The disadvantage of these angle measurement systems is that the antenna of the angle measurement system is composed of metal, dielectric or metal-dielectric mixed materials, which will affect the boundary conditions of the electromagnetic field, disturb the electromagnetic waves in space, and then affect the measurement accuracy....
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IPC IPC(8): G01B7/30
CPCG01B7/30
Inventor 林沂付云起刘燚郭敏吴逢川武博
Owner NAT UNIV OF DEFENSE TECH