Atomic infrared imaging device

Abstract

According to the technical scheme, the atomic infrared imaging device is characterized in that the atomic infrared imaging device comprises a laser device system, a beam shaping module, an infrared imaging conversion module and an image collecting and processing module, an air chamber is arranged on one side of a laser device, a sealing plate is arranged on one side of the air chamber, and the sealing plate is arranged on the other side of the laser device system; the sealing plate is connected with the air chamber through a hinge, an air injection nozzle is arranged on the top surface of the air chamber, an infrared imaging conversion module is arranged in the air chamber, and an image acquisition and processing module is arranged on the top surface of the air chamber. A higher imaging signal-to-noise ratio can be obtained, and the infrared imaging device based on atoms has great advantages in the aspects of sensitivity, spatial resolution and the like, and has important application value in the aspects of medical imaging, safety detection, material defect detection and infrared beam quality detection.

Description

Technical Field

[0001] The invention relates to the technical field of alkali metal Rydberg atom energy level transition and infrared imaging, and in particular to an atomic infrared imaging device. Background Art

[0002] Infrared light, also known as infrared radiation, is an electromagnetic wave between visible light and microwaves with a wavelength range of 0.76-1000μm. Infrared light can penetrate materials such as ceramics, fat, cloth, plastic, etc. but is not easy to penetrate metal and is harmless to the human body. Due to these excellent properties of infrared light, it has huge advantages in medical imaging, safety testing, and material defect detection.

[0003] In the infrared field, with the development of infrared light sources and detection technologies in recent years, the application fields of infrared imaging have become more and more extensive, and it has been used in homeland security, gas molecule analysis, chemicals and biological tissues, thermal imaging and non-destructive materials.

[0004] Traditional infrared imaging devices are mostly based on electronic detectors, which require complex refrigeration equipment for high-resolution imaging and multiple scans and calculations for phase imaging, making it impossible to present images quickly and conveniently. In addition, current infrared imaging devices do not have both high sensitivity and high resolution, and cannot compete with visible light and near-infrared detectors in terms of sensitivity, cost-effectiveness and integration. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an atomic infrared imaging device, which solves the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An atomic infrared imaging device comprises: a laser system, a beam shaping module, an infrared imaging conversion module, and an image acquisition processing module. An air chamber is arranged on one side of the laser, a sealing plate is arranged on one side of the air chamber, the sealing plate is connected to the air chamber through a hinge, an air injection nozzle is arranged on the top surface of the air chamber, an infrared imaging conversion module is arranged inside the air chamber, and the image acquisition processing module is arranged on the top surface of the air chamber.

[0008] Preferably, the laser comprises: a detection light laser, a coupling light laser and a Rydberg laser, and the coupling laser and the Rydberg laser are coupled into the first beam shaping module and the second beam shaping module through optical fibers.

[0009] Preferably, the first beam shaping module and the second beam shaping module include a Dove prism, a prism pair, a plano-convex cylindrical lens, and a plano-concave cylindrical lens.

[0010] Preferably, the infrared imaging conversion module comprises: a sample holder, an infrared lens group and an air chamber; the sample holder is a rotatable sample holder; and the air chamber is a cesium atom air chamber.

[0011] Preferably, the image acquisition and processing module includes a lens group, a CCD camera and a computer; the infrared imaging conversion module and the image acquisition and processing module are configured to be connected through an optical fiber light cone; and the CCD camera is electrically connected to the computer.

[0012] Preferably, the air chamber 2 is designed as a thin layer structure.

[0013] A method for atomic infrared imaging, applicable to an atomic infrared imaging device according to any one of claims 1 to 6, characterized in that the specific steps are as follows:

[0014] Step 1: Place the imaging object on the sample holder;

[0015] Step 2: Turn on the detection light laser, coupling light laser and Rydberg laser, transmit 852nm detection light, 1470nm coupling light and Rydberg light to the atomic gas chamber, and use a three-step excitation method to coherently excite the atoms from the ground state to the initial Rydberg state. When the infrared light acts on the atoms, the atoms are incoherently transferred from the initial Rydberg state to a specific Rydberg state;

[0016] Step 3: When the atom is de-excited from the specific Rydberg state, the spontaneously emitted fluorescence is in the visible light band and is received by an optical CCD camera;

[0017] Step 4: Adjust the terahertz reflector to make the terahertz wave incident at an angle and sample holder to obtain complete object image information;

[0018] Step 5: The fluorescence intensity is consistent with the infrared intensity distribution, and the fluorescence image is obtained by the CCD camera and sent to the computer.

[0019] In summary, the present invention mainly has the following beneficial effects:

[0020] By proposing an atomic infrared imaging device, using the imaging technology of Rydberg atom manipulation, high-contrast imaging of the fine structure inside the object can be achieved. At the same time, it can also break through the diffraction limit and achieve high-resolution real-time imaging, which has broad application prospects;

[0021] The atomic infrared imaging device receives infrared light from the outside world and then irradiates it on the infrared lens group after passing through the sample holder. At the same time, the sample is rotated so that the infrared light scans the complete sample information. The infrared illumination light passing through the object becomes scattered light and enters the infrared imaging conversion module; the laser using the three wavelength lasers will adopt a three-step excitation method to coherently excite the atoms from the ground state to the initial Rydberg state; when the interfering infrared light acts on the atoms, the atoms are incoherently transferred from the initial Rydberg state to a specific Rydberg state. When the atoms are de-excited from the specific Rydberg state, they spontaneously radiate visible fluorescence. The generated fluorescence image contains the intensity of the infrared. Finally, the optical CCD camera is used to receive and save the image in Tif format.

[0022] 1. Rydberg atomic gas chamber has the characteristics of high sensitivity, high resolution, real-time imaging, etc., so the atomic gas chamber is used as the surface detector of infrared imaging;

[0023] 2. The infrared light in the present invention has good penetrability, and has good penetrability to most dielectric materials and non-polar liquids, and can perform non-destructive testing on their internal structures;

[0024] 3. Compared with the existing infrared imaging equipment, the present invention has a simple structure, low cost and is easy to operate;

[0025] 4. The images processed by the image acquisition and processing module in the present invention have the advantages of high resolution and high sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the planar structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the air chamber structure of the present invention.

[0028] Figure numerals: 1. laser system; 2. gas chamber; 3. first beam shaping module; 4. second beam shaping module; 5. sample holder; 6. infrared lens group; 7. CCD camera; 8. gas injection nozzle; 9. sealing plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] refer to Figure 1 , Figure 2An atomic infrared imaging device comprises: a laser system 1, a beam shaping module, an infrared imaging conversion module, and an image acquisition and processing module. An air chamber 2 is arranged on one side of the laser system 1, a sealing plate 9 is arranged on one side of the air chamber 2, and the sealing plate 9 is connected to the air chamber 2 through a hinge. An air injection nozzle 8 is arranged on the top surface of the air chamber 2, an infrared imaging conversion module is arranged inside the air chamber 2, and an image acquisition and processing module is arranged on the top surface of the air chamber 2.

[0031] By setting up a laser system 1, the laser system 1 is used to output frequency-stable detection light, coupling light and Rydberg light. The beam shaping module is used to shape the three laser light spots with stable frequencies into long strips to form a light sheet in the air chamber 2. The infrared imaging conversion module is used to convert infrared light into visible fluorescence, and the image acquisition and processing module is used to acquire visible fluorescence images.

[0032] As a further solution of the present invention, the laser system 1 comprises: a detection light laser, a coupling light laser and a Rydberg laser, and the coupling laser and the Rydberg laser are coupled into the first beam shaping module 3 and the second beam shaping module 4 through optical fibers. ;

[0033] By setting the first beam shaping module 3 and the second beam shaping module 4, the clear lasers of the detection light, the coupling light and the Rydberg light are absorbed to stabilize the frequency and the EIT stabilize the frequency respectively, and connected to the first beam shaping module 3 and the second beam shaping module 4 through optical fibers, the frequency stability, consistency, spatial resolution and signal-to-noise ratio of the system can be significantly improved, while reducing the impact of the noise environment.

[0034] As a further solution of the present invention, the first beam shaping module 3 and the second beam shaping module 4 include a Dove prism, a prism pair, a plano-convex cylindrical lens, and a plano-concave cylindrical lens;

[0035] By setting up the first beam shaping module 3 and the second beam shaping module 4, the laser beam can be effectively shaped into an oblong spot through a Dove prism, a prism pair, a plano-convex cylindrical surface and a concave cylindrical beam combination, ensuring that the laser forms a uniform shape in the air chamber. This design improves the spatial control ability of the beam, enhances the consistency and accuracy of imaging, and can also adjust the beam shape to meet different experimental requirements, thereby improving the performance and efficiency of the infrared imaging device.

[0036] As a further solution of the present invention, the infrared imaging conversion module comprises: a sample holder 5, an infrared lens group 6 and an air chamber 2; the sample holder 5 is a rotatable sample holder; the air chamber 2 is a cesium atom air chamber;

[0037] By setting up the sample holder 5, the angle of the sample can be flexibly adjusted to provide multi-angle imaging capabilities, and at the same time, the external infrared signal is efficiently focused into the cesium atomic gas chamber through the infrared lens group 6 to achieve accurate conversion of the infrared signal. The cesium atomic gas chamber is sensitive to light of a specific wavelength, ensuring efficient conversion of infrared light into visible light, which is conducive to improving the sensitivity and resolution of imaging and meeting diverse imaging needs.

[0038] As a further solution of the present invention, the image acquisition and processing module includes a lens group, a CCD camera 7 and a computer; the infrared imaging conversion module and the image acquisition and processing module are configured to be connected through an optical fiber light cone; the CCD camera 7 is electrically connected to the computer;

[0039] By setting up a CCD camera 7, the visible light signal collected by the infrared imaging conversion module is efficiently transmitted to the CCD camera 7 by a fiber optic light cone, so as to achieve high-precision image acquisition. The CCD camera 7 is electrically connected and can quickly transmit and process image data, providing high-resolution image analysis. At the same time, the connection method of the fiber optic light cone reduces light loss and interference, improves the quality of image acquisition and the signal-to-noise ratio, and provides a guarantee for subsequent accurate data analysis and processing.

[0040] As a further solution of the present invention, the air chamber 2 is designed as a thin layer structure;

[0041] By designing the gas chamber 2 as a thin layer structure, the thickness of the gas in the optical path is minimized, excessive light absorption is concentrated, and sufficient spatial resolution is ensured at the same time.

[0042] A method for atomic infrared imaging, applicable to an atomic infrared imaging device according to any one of claims 1 to 6, characterized in that the specific steps are as follows:

[0043] Step 1: placing the imaging object on the sample holder 5;

[0044] Step 2: Turn on the detection light laser, coupling light laser and Rydberg laser, transmit 852nm detection light, 1470nm coupling light and Rydberg light to the atomic gas chamber, and use a three-step excitation method to coherently excite the atoms from the ground state to the initial Rydberg state. When the infrared light acts on the atoms, the atoms are incoherently transferred from the initial Rydberg state to a specific Rydberg state;

[0045] Step 3: When the atom is de-excited from the specific Rydberg state, the spontaneously emitted fluorescence is in the visible light band and is received by the optical CCD camera 7;

[0046] Step 4: Adjust the terahertz reflector to make the terahertz wave incident at an angle and sample holder to obtain complete object image information;

[0047] Step 5: The fluorescence intensity is consistent with the infrared intensity distribution, and the fluorescence image is obtained by the CCD camera 7 and sent to the computer.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atomic infrared imaging device, characterized in that: include: A laser system (1), a beam shaping module, an infrared imaging conversion module, and an image acquisition processing module. An air chamber (2) is provided on one side of the laser system (1), a sealing plate (9) is provided on one side of the air chamber (2), the sealing plate (9) is connected to the air chamber (2) via a hinge, an air injection nozzle (8) is provided on the top surface of the air chamber (2), an infrared imaging conversion module is provided inside the air chamber (2), and an image acquisition processing module is provided on the top surface of the air chamber (2).

2. The atomic infrared imaging device according to claim 1, characterized in that: The laser system (1) comprises: A detection light laser, a coupling light laser and a Rydberg laser are provided, wherein the coupling laser and the Rydberg laser are coupled into a first beam shaping module (3) and a second beam shaping module (4) through optical fibers.

3. The atomic infrared imaging device according to claim 2, characterized in that: The first beam shaping module (3) and the second beam shaping module (4) comprise a Dove prism, a prism pair, a plano-convex cylindrical lens, and a plano-concave cylindrical lens.

4. The atomic infrared imaging device according to claim 1, characterized in that: The infrared imaging conversion module comprises: a sample rack (5), an infrared lens group (6) and an air chamber (2); the sample rack (5) is a rotatable sample rack; and the air chamber (2) is a cesium atom air chamber.

5. The atomic infrared imaging device according to claim 1, characterized in that: The image acquisition and processing module comprises a lens group, a CCD camera (7) and a computer; the infrared imaging conversion module and the image acquisition and processing module are configured to be connected via an optical fiber light cone; and the CCD camera (7) is electrically connected to the computer.

6. The atomic infrared imaging device according to claim 1, characterized in that: The inner wall of the air chamber (2) is designed as a thin layer structure.

7. A method for atomic infrared imaging, applicable to an atomic infrared imaging device according to any one of claims 1 to 6, characterized in that: The specific steps are as follows: Step 1: placing the imaging object on the sample holder 5; Step 2: Turn on the detection light laser, coupling light laser and Rydberg laser, transmit 852nm detection light, 1470nm coupling light and Rydberg light to the atomic gas chamber, and use a three-step excitation method to coherently excite the atoms from the ground state to the initial Rydberg state. When the infrared light acts on the atoms, the atoms are incoherently transferred from the initial Rydberg state to a specific Rydberg state; Step 3: When the atom is de-excited from the specific Rydberg state, the spontaneously emitted fluorescence is in the visible light band and is received by the optical CCD camera 7; Step 4: Adjust the terahertz reflector to make the terahertz wave incident obliquely on the sample holder 5 to obtain complete object image information; Step 5: The fluorescence intensity is consistent with the infrared intensity distribution, and the fluorescence image is obtained by the CCD camera 7 and sent to the computer.

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