Atomic interference device for rotation and gravity integrated measurement

Abstract

The invention belongs to the technical field of cold atom interference precision measurement, and particularly discloses an atom interference device for rotation and gravity integrated measurement, which is specifically characterized in that a first optical component is used for vertically entering Raman light from the top to control an atomic wave packet after state selection when gravity measurement is carried out so as to complete a three-pulse atom interference process; the pulse part and the pulse part are respectively used for enabling laser pulses to enter from the side surface when rotating measurement is carried out, enabling the laser pulses to interact with atoms after state selection, realizing beam splitting-reflection-reflection-beam combination of atomic wave packets, and completing a four-pulse atom interference process; the state selection detection part is used for incidence of detection light, final state detection of falling atoms is carried out, and gravity measurement and angular velocity measurement in the horizontal direction are realized. According to the invention, the integrated measurement of rotation and gravity is realized, the functionality and practicability of the cold atom interferometer are remarkably improved, and the application scene of the cold atom interferometer is widened.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cold atom interference precision measurement, and more particularly relates to an atomic interference device for integrated measurement of rotation and gravity. BACKGROUND

[0002] In the past three decades, cold atom interference technology has developed rapidly and has become an important means for achieving high-precision precision measurement in the field of measurement. Cold atom interferometers represented by cold atom interference gravity (gravity gradient) meters and gyroscopes have been widely used in many fundamental physics researches such as equivalence principle testing and measurement of gravitational constant, and in the field of inertial sensing represented by gravity, gravity gradient and rotation measurement. Cold atom interference measurement technology has great significance for basic scientific research and resource exploration.

[0003] Generally speaking, the cold atom interference measurement process includes atom cooling and trapping, atom fountain, state selection, interference and detection. Different physical quantities produce interference phase shifts with different forms of expression on atoms during the atomic interference process. Measuring these phase shifts can be used to deduce the corresponding physical quantities. The implementation of this series of processes requires different types of lasers to act on the atomic groups in the device at different times, which determines the structure and appearance of the device vacuum container; the vacuum container needs to have a certain volume to prevent the atoms in the container from colliding with the vacuum container wall during free flight; the atomic interferometer is usually designed to be sensitive to a specific physical quantity, for example, the atomic interference gravity meter mainly measures the gravitational acceleration, and the atomic interference gyroscope mainly measures the angular velocity. The gravity meter is generally designed to vertically throw the atoms and apply the Raman light along the vertical direction; the gyroscope can adopt a slanting throw design, and the atomic flight trajectory is a parabola, and the Raman light propagates along the horizontal direction.

[0004] In the field of inertial sensing, it is often necessary to obtain acceleration and angular velocity in multiple directions, i.e. multi-degree-of-freedom inertial quantity sensing. It is difficult for a general atomic interferometer to achieve integrated measurement of acceleration and angular velocity, which limits the practical application ability and application scenarios of the atomic interferometer. SUMMARY

[0005] In view of the defects of the prior art, the purpose of the present application is to provide an atomic interference device for integrated measurement of rotation and gravity, which aims to solve the problem that the existing atomic interferometer is difficult to achieve integrated measurement of acceleration and angular velocity.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application provides an atomic interference device for integrated measurement of rotation and gravity, an atomic interference gravity measurement module, a pulse component, and The pulse component; the atomic interference gravity measurement module comprises a through magnetic optical trap component, a state selection detection component and an optical component; The pulse component and The pulse component is located above the state selection detection component of the atomic interference gravity measurement module; The pulse component and The pulse component is respectively used for side incidence The laser pulse and The laser pulse interacts with the state-selected atom, realizes beam splitting-reflection-reflection-beam combination of the atom wave packet, and completes - - - The four-pulse atomic interference process; The magnetic optical trap component is used for cooling the atom by the incident trapping light, and lifting the cooled atom into the state selection detection component; The state selection detection component is used for state selection of the lifted atom by the incident state selection light, and final state detection of the falling atom by the incident detection light, realizing gravity measurement and horizontal direction angular velocity measurement; The optical component is used for vertical incidence of Raman light from the top to manipulate the state-selected atom wave packet when the gravity measurement is performed, completing - - The three-pulse atomic interference process.

[0007] Further preferably, The pulse component and The pulse component is provided with a window on the four peripheral sides, respectively used for incident The laser pulse and The laser pulse.

[0008] Further preferably, the magnetic optical trap component comprises a two-dimensional magnetic optical trap component and a three-dimensional magnetic optical trap component, and the two-dimensional magnetic optical trap component is located obliquely below the three-dimensional magnetic optical trap component; The two-dimensional magnetic optical trap component is used for two-dimensional pre-cooling the atom by the incident trapping light, and the pre-cooled atom and the incident propulsion light enter the three-dimensional magnetic optical trap component; The three-dimensional magnetic optical trap component is used for further three-dimensional cooling of the pre-cooled atom by the incident trapping light, and the fully cooled atom is lifted into the state selection detection component based on the propulsion light.

[0009] Further preferably, the two-dimensional magnetic optical trap component is formed by rectangular holes on the four long sides and circular holes on the upper and lower ends, and the remaining holes are sealed by quartz glass except the hole connected with the three-dimensional magnetic optical trap component.

[0010] Further preferably, the three-dimensional magneto-optical trap component is a polyhedron with three groups of windows symmetrically opened above and below, so that the trapped light incident from the six windows converges at the center of the three-dimensional magneto-optical trap component, thereby trapping the pre-cooled atoms at the center.

[0011] Further preferably, the state selection detection component is in the shape of a cuboid, with two light-transmitting windows provided on each of the four sides, and the eight light-transmitting windows are parallel and opposite to each other in pairs, with the two symmetrical pairs below being used for injecting state selection light, and the two symmetrical pairs above being used for injecting detection light.

[0012] Further preferably, the optical component includes a first optical component and a second optical component, and the first optical component is used to manipulate the atomic wave packet after the selected state by vertically incident Raman light from the top when performing gravity measurement, to complete - - Three-pulse atomic interference process; the second optical component is used to reflect the Raman light incident vertically from the first optical component back to form a counter-radio pair, thereby realizing coherent manipulation of atomic matter waves.

[0013] Further preferably, the second optical component includes a 1 / 4 wave plate, a 0-degree reflecting mirror and a supporting base; the 1 / 4 wave plate is mounted on the 0-degree reflecting mirror.

[0014] In a second aspect, based on the atomic interferometer device provided above, the present application provides a corresponding rotation measurement method, which specifically includes the following steps: Injecting trapping light into the two-dimensional magneto-optical trap component to pre-cool the atoms in two dimensions, and injecting propulsion light at the same time; Injecting trapped light into the three-dimensional magneto-optical trap component to further three-dimensionally cool the pre-cooled atoms, and using the propulsion light to throw the fully cooled atoms upward into the state selection detection component; Injecting state-selection light into the state-selection detection component to select the state of the upward-thrown atoms; exist Pulse components and The pulse components are injected separately Laser pulses and The laser pulse interacts with the selected atoms to realize the splitting-reflection-reflection-combination of the atomic wave packet, completing - - - Four-pulse atomic interferometry process; The final state of the falling atoms is detected to achieve horizontal angular velocity measurement.

[0015] In a third aspect, based on the atomic interferometer device provided above, the present application provides a corresponding gravity measurement method, which specifically includes the following steps: In the two-dimensional magnetic optical trap component, the atoms are pre-cooled in two dimensions by injecting the trapping light, and the pushing light is injected; In the three-dimensional magnetic optical trap component, the pre-cooled atoms are further cooled in three dimensions, and the fully cooled atoms are lifted into the state selection detection component based on the pushing light; In the state selection detection component, the state selection light is injected to select the state of the lifted atoms; The Raman light is vertically injected from the top of the first optical component to manipulate the state-selected atomic wave packet, and - - The three-pulse atomic interference process is completed. The final state of the falling atoms is detected to realize gravity measurement.

[0016] Compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects: The present application provides an atomic interference device for integrated rotation and gravity measurement, which is provided with a first optical component, a pulse component and a pulse component; when performing gravity measurement, the Raman light is vertically injected from the top of the first optical component to manipulate the state-selected atomic wave packet, and - - The three-pulse atomic interference process is completed. When performing rotation measurement, the laser pulses are injected from the side to interact with the state-selected atoms to realize beam splitting-reflection-reflection-beam combination of the atomic wave packet, and - - - The four-pulse atomic interference process is completed.

[0017] The present application provides an atomic interference device for integrated rotation and gravity measurement, which is vertically designed in terms of structure design, and the two-dimensional magnetic optical trap component is connected to the three-dimensional magnetic optical trap component in a slanting manner, which reduces the volume of the device, facilitates overall magnetic shielding, and thus brings the beneficial effects of compact structure and effective suppression of external magnetic field interference. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the vacuum device provided by the embodiment of the present application and applicable to integrated rotation and gravity measurement; Figure 2is a structural schematic diagram (top view and front view) of a three-dimensional magneto-optical trap component provided by an embodiment of the present application; Figure 3 is a structural schematic diagram (front view) of a state selection detection component provided by an embodiment of the present application; In all the drawings, the same reference signs are used to represent the same elements or structures, wherein: 1 is a two-dimensional magneto-optical trap component; 2 is a three-dimensional magneto-optical trap component; 3 is a state selection detection component; 4 is a pulsing component; 5 is an interference component; 6 is a pulsing component; 7 is a first optical component; 8 is a second optical component. DETAILED DESCRIPTION

[0019] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0020] The term "and / or" herein is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. The symbol " / " in this paper represents the relationship of or, for example, A / B represents A or B.

[0021] The terms "first" and "second" and the like in the description and claims herein are used to distinguish different objects, and not to describe a specific order of the objects.

[0022] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0023] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] The present application provides an atomic interference device for rotation and gravity integrated measurement, which aims to realize horizontal rotation measurement based on four-pulse interference and vertical gravity measurement based on three-pulse interference on the same device. It aims to enhance the application ability of the cold atom interferometer and broaden the application scenarios of the cold atom interferometer; the main feature of the present application is compact structure and overall magnetic shielding, strong anti-interference ability; more importantly, it can realize four-pulse cold atom interference rotation and three-pulse cold atom interference gravity integrated measurement.

[0025] Figure 1 The overall structure of the atomic interference device for integrated rotation and gravity measurement provided by the present application is given, only the parts related to the embodiments of the present application are shown for the convenience of illustration, and the details are as follows: The present application provides an atomic interference device for integrated rotation and gravity measurement, comprising: a two-dimensional magnetic optical trap component 1, a three-dimensional magnetic optical trap component 2, a state selection detection component 3, a pulse component 4, an interference component 5, a pulse component 6, a first optical component 7 and a second optical component 8; the cuboid-shaped two-dimensional magnetic optical trap component 1 is located at the lower left of the device and is connected to the three-dimensional magnetic optical trap component 2 at an angle through a pipeline; the three-dimensional magnetic optical trap component 2 is connected to the state selection detection component 3 above and the second optical component 8 below; the state selection detection component 3 is connected to the pulse component 4, the interference component 5, the pulse component 6 and the first optical component 7 in sequence above; The two-dimensional magnetic optical trap component 1 is a rectangle with six holes formed on the six faces, rectangular holes are formed on the four long sides, and circular holes are formed on the two end faces, and except for the hole connected to the three-dimensional magnetic optical trap component 2, the remaining five holes are sealed with quartz glass; the three-dimensional magnetic optical trap component 2 is a polyhedron cut from a cuboid, and a plurality of connection holes and windows are formed to realize different functions; among them, the upper end face connection hole is connected to the state selection detection component 3 through a pipeline, the state selection detection component 3 is cut from a cuboid, and connection holes are arranged on the upper and lower end faces, and the whole can be divided into two layers, the upper layer includes four side holes forming quartz windows for shooting in probe light and fluorescence collection, and the lower layer four side holes form quartz windows for shooting in state selection light; The pulse component 4 is designed as a square, and circular holes are formed on the six faces, among them, the upper and lower end faces are connected, and the four sides are quartz windows; the lower end face is connected to the state selection detection component 3, the upper end face is connected to the interference component 5, and the four sides are used for shooting in laser; the interference component 5 is a hollow cylindrical tube, the lower end face is connected to the pulse component 4, and the upper end face is connected to the pulse component 6; The pulse component 6 is exactly the same as the pulse component 4, the lower end face is connected to the interference component 5, and the upper end face is connected to the first optical component 7; the first optical component 7 mainly includes a quartz window for vertically shooting in Raman light; the second optical component 8 mainly includes a 1 / 4 wave plate and a 0-degree mirror, which is used to reflect the laser shot from the first optical component 7 back and adjust the polarization of the reflected light to be perpendicular to the polarization of the incident light.

[0026] It should be pointed out here that the materials of the above components are all non-magnetic metals, and the light transmission windows are sealed by transparent glass. ​

[0027] It is pointed out here that the two-dimensional magnetic optical trap component and the three-dimensional magnetic optical trap component are connected obliquely, so that the whole device is very compact.

[0028] It is pointed out here that the atom interference device body is a vacuum cavity, and the material of the vacuum cavity is titanium alloy, but is not limited to titanium alloy, as long as the material is non-magnetic and has a low thermal expansion coefficient. It is pointed out that the material of the sealed light transmission window in the present application is quartz glass, but is not limited to quartz glass, and other glass materials can also be used, as long as the transmittance and flatness are sufficient.

[0029] The atom interference device suitable for integrated rotation and gravity measurement provided in the present application can realize four-pulse cold atom interference rotation and three-pulse cold atom interference gravity integrated measurement. The specific method comprises the following steps: The atoms after being pre-cooled by four laser beams in the two-dimensional magnetic optical trap component 1 are pushed into the three-dimensional magnetic optical trap component 2 for further three-dimensional cooling by six counter-propagating laser beams. The sufficiently cooled atoms are thrown upward into the state selection and detection component 3. When rotation measurement is performed, the state selection laser is incident horizontally from the side to interact with the atoms to realize atom state selection. When gravity measurement is performed, the state selection laser is vertically incident from the first optical component to realize atom state selection. After the state selection, the atoms return to the state selection and detection component 3 after being thrown upward and falling downward to perform final state detection. The atoms after the state selection pass through the pulse component 4 and the pulse component 6 in sequence, respectively interact with laser pulses and laser pulses to realize beam splitting-reflection-reflection-beam combination, complete - - - The four-pulse atom interference process finally performs final state detection in the state selection and detection component 3 to realize horizontal direction angular velocity measurement. When gravity measurement is performed, only the Raman light vertically incident from the first optical component 7 is used to manipulate the atom matter wave during the upward and downward throwing process to complete - - The three-pulse atom interference process finally performs final state detection in the state selection and detection component 3 to realize gravity acceleration measurement.

[0030] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0031] Figure 1 The two-dimensional magnetic optical trap component 1 is a titanium alloy cuboid with a length of 210 mm , a width of 80 mm , and a height of 80 mm. A 25mm rectangular hole is formed by opening a 26mm diameter circular hole on the two square end faces. The rectangular windows on the front, back, top and bottom sides are used to inject two-dimensional cooling light. The circular hole on the left is used to inject Push light. The direction of Push light can be calibrated through the circular hole 23. After pre-cooling, the atoms are subjected to the pressure of Push light and enter the three-dimensional magneto-optical trap component 2 through the circular hole 25 for three-dimensional Doppler cooling. Figure 2 As shown, the three-dimensional magneto-optical trap component 2 is a 170mm high icosahedron. Six beams of trapped light are injected from six windows symmetrically distributed with the circular hole 21 to fully cool and trap the atoms. At this time, the trapped atomic groups can be observed and the loading rate can be measured through the side windows such as the circular holes 24, 26 and 27. After that, the frequency of the next three beams of trapped light increases to throw the atoms upward into the state selection detection component 3; Figure 3 As shown, the state detection component 3 is made of 120mm 120mm Made of a 160mm titanium alloy cuboid, the state selection light is injected into the vacuum container through the circular hole 31 to select the atoms. Only the atoms in the selected state can continue to fly upward. When the atoms fall back, the detection light is injected into the vacuum container of the state selection detection component through the circular hole 32 to detect the atoms. The pulse component 4 is formed by a titanium alloy cube with a side length of 120 mm, with circular holes of 60 mm in diameter opened on the four sides and circular holes of 66 mm in diameter opened on the upper and lower end faces. The interference component 5 is a hollow pipe with an outer diameter of 73 mm, an inner diameter of 60 mm, and a length of approximately 209 mm. The pulse component 6 is a titanium alloy cube with a side length of 120mm, with circular holes of 60mm diameter opened on the four sides and circular holes of 63mm diameter opened on the upper and lower end faces; the first optical component 7 is a quartz glass window with a diameter of 60mm; the second optical component 8 is equipped with a 1 / 4 wave plate with a diameter of two inches and a 0-degree reflector; when performing rotation measurement, the atoms are selected and successively pass through Pulse component 4 and Pulse components 6, respectively Laser pulses and Laser pulses interact to achieve the splitting-reflection-reflection-combination of atomic wave packets, completing - - - In the four-pulse atomic interference process, the maximum pulse interval time is about 150ms, and the final state detection is finally performed in the state selection detection component 3 to achieve the horizontal angular velocity measurement; when performing gravity measurement, the atoms are thrown up and down, and only the laser vertically injected from the first optical component 7 is used to manipulate the atomic wave packet to complete the - - The three-pulse atomic interference process has a maximum pulse interval time of about 300 ms, and finally, the final state detection is performed in the state selection detection component 3, so that the gravity measurement can be realized.

[0032] Compared with the prior art, the present application has the following advantages: The present application provides an atomic interference device for integrated rotation and gravity measurement, which adopts vertical design in terms of structural design, and the two-dimensional magnetic optical trap component is connected to the three-dimensional magnetic optical trap component in a slanting manner, thereby shortening the device volume, allowing overall magnetic shielding, and bringing about the beneficial effects of compact structure and reduced external magnetic field interference; in terms of principle design, based on the principles of two-axis horizontal rotation measurement and vertical gravity measurement, integrated rotation and gravity measurement is realized, and the two measurement functions are integrated in a single instrument, thereby significantly enhancing the multi-parameter transmission capability of the cold atom interferometer and widening the application scenarios thereof.

[0033] It should be understood that expressions such as "include" and "may include" used in the present application indicate the presence of disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In the present application, terms such as "include" and / or "have" can be interpreted to mean that specific features, numbers, operations, constituent elements, components or combinations thereof are present, but cannot be interpreted to exclude the presence or addition of one or more other features, numbers, operations, constituent elements, components or combinations thereof.

[0034] In addition, in the present application, the expression "and / or" includes any and all combinations of the associated listed terms. For example, the expression "A and / or B" can include A, can include B, or can include both A and B.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through an intermediate medium.

[0036] In addition, in the embodiments of the present application, the mathematical concepts of symmetry, equality, parallelism, perpendicularity, etc. are mentioned. These limitations are all based on the current process level, and are not absolutely strict definitions in the mathematical sense, and a small amount of deviation is allowed, and approximate symmetry, approximate equality, approximate parallelism, approximate perpendicularity, etc. are all allowed.

[0037] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An atomic interferometer for integrated measurement of rotation and gravity, characterized in that: include: Atomic interferometry gravity measurement module, Pulse components and Pulse components; The atomic interferometric gravity measurement module includes a magneto-optical trap component, a state selection detection component and an optical component which are arranged through the module; Pulse components and The pulse component is located above the state selection detection component of the atomic interferometry gravity measurement module; The magneto-optical trap component is used to cool atoms by incident trapped light and throw the cooled atoms upward into the state selection detection component; The state selection detection component is used to select the state of the upward-thrown atoms through the incident state selection light, and to detect the final state of the falling atoms through the incident detection light, thereby realizing the measurement of gravity and horizontal angular velocity; Pulse components and The pulse components are used for side incidence when measuring rotation. Laser pulses and The laser pulse interacts with the selected atoms to realize the splitting-reflection-reflection-combination of the atomic wave packet, completing - - - Four-pulse atomic interferometry process; The optical components are used to manipulate the atomic wave packets after the selected state by vertically incident Raman light from the top when performing gravity measurement, completing - - Three-pulse atomic interferometry process.

2. The atomic interference device according to claim 1, characterized in that: The magneto-optical trap component includes a two-dimensional magneto-optical trap component and a three-dimensional magneto-optical trap component, and the two-dimensional magneto-optical trap component is located obliquely below the three-dimensional magneto-optical trap component; The two-dimensional magneto-optical trap component is used to pre-cool atoms in two dimensions by incident trapping light, and incident propulsion light at the bottom, and the pre-cooled atoms and propulsion light enter the three-dimensional magneto-optical trap component; The three-dimensional magneto-optical trap component is used to further three-dimensionally cool the pre-cooled atoms by incident trapped light, and to throw the fully cooled atoms upward into the state selection detection component based on the propulsion light.

3. The atomic interference device according to claim 1 or 2, characterized in that: Pulse components and There are windows on the sides of the pulse component for incident Laser pulses and Laser pulses.

4. The atomic interference device according to claim 2, characterized in that The two-dimensional magneto-optical trap component is formed by openings on six sides of a rectangle, with rectangular holes on the four long sides and circular holes on the upper and lower end faces. Except for the holes connected to the three-dimensional magneto-optical trap component, the rest of the holes are sealed by quartz glass.

5. The atomic interference device according to claim 2 or 4, characterized in that: The three-dimensional magneto-optical trap component is a polyhedron with three groups of windows symmetrically opened on the upper and lower sides, so that the trapped light incident from the six windows converges at the center of the three-dimensional magneto-optical trap component, thereby trapping the pre-cooled atoms in the center position.

6. The atomic interference device according to claim 1 or 2, characterized in that: The state selection detection component is in the shape of a cuboid, with two light-transmitting windows set on each of the four sides. The eight light-transmitting windows are parallel and opposite to each other. The two symmetrical pairs at the bottom are used to inject state selection light, and the two symmetrical pairs at the top are used to inject detection light.

7. The atomic interference device according to claim 1, characterized in that The optical component includes a first optical component and a second optical component. The first optical component is used to manipulate the atomic wave packet after the selected state by vertically incident Raman light from the top when performing gravity measurement. - - Three-pulse atomic interferometry process; The second optical component is used to reflect the Raman light vertically incident from the first optical component back to form a pair of opposing lasers, thereby achieving coherent manipulation of atomic matter waves.

8. The atomic interference device according to claim 7, characterized in that: The second optical component includes a 1 / 4 wave plate, a 0-degree reflecting mirror and a supporting base; the 1 / 4 wave plate is installed on the 0-degree reflecting mirror.

9. A rotation measurement method based on the atomic interferometer device according to any one of claims 1 to 8, characterized in that: The specific steps include: Injecting trapping light into the two-dimensional magneto-optical trap component to pre-cool the atoms in two dimensions, and injecting propulsion light at the same time; Injecting trapped light into the three-dimensional magneto-optical trap component to further three-dimensionally cool the pre-cooled atoms, and using the propulsion light to throw the fully cooled atoms upward into the state selection detection component; Injecting state-selection light into the state-selection detection component to select the state of the upward-thrown atoms; exist Pulse components and The pulse components are injected separately Laser pulses and The laser pulse interacts with the selected atoms to realize the splitting-reflection-reflection-combination of the atomic wave packet, completing - - - Four-pulse atomic interferometry process; The final state of the falling atoms is detected to achieve horizontal angular velocity measurement.

10. A gravity measurement method based on the atomic interferometer device according to any one of claims 1 to 8, characterized in that: The specific steps include: Injecting trapping light into the two-dimensional magneto-optical trap component to pre-cool the atoms in two dimensions, and injecting propulsion light at the same time; Injecting trapped light into the three-dimensional magneto-optical trap component to further three-dimensionally cool the pre-cooled atoms, and using the propulsion light to throw the fully cooled atoms upward into the state selection detection component; Injecting state-selection light into the state-selection detection component to select the state of the upward-thrown atoms; The Raman light is incident vertically from the top of the first optical component to manipulate the atomic wave packet after the selected state, completing - - Three-pulse atomic interferometry process; The final state of falling atoms is detected to achieve gravity measurement.

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