CN111650174B - Enhanced atomic fluorescence collecting device and collecting method - Google Patents
Enhanced atomic fluorescence collecting device and collecting method Download PDFInfo
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- CN111650174B CN111650174B CN202010733355.7A CN202010733355A CN111650174B CN 111650174 B CN111650174 B CN 111650174B CN 202010733355 A CN202010733355 A CN 202010733355A CN 111650174 B CN111650174 B CN 111650174B
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
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- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
- G01N21/6404—Atomic fluorescence
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Abstract
The application discloses an enhanced atomic fluorescence collecting device and a collecting method, wherein the device comprises a shell, a fluorescence detection hole, an atomic beam collimation hole and a laser beam collimation hole are arranged on the shell; an ellipsoidal reflecting surface and a hemispherical reflecting surface are arranged on the inner wall of the shell; the system does not need an additional lens device, saves space, reduces the complexity of the system and saves cost; the atomic beam collimation function is added, and the atomic beam collimation device can be used for atomic physical experiments with higher requirements on atomic beam collimation; the interference of ambient stray light can be effectively shielded; the method can cascade a plurality of detection areas, and enhances the flexibility of a collection method; the method is suitable for experimental systems of atomic beam frequency standard, fountain atomic clock, cold atom physics and the like.
Description
Technical Field
The application relates to the technical field of manufacturing and application of optical instruments, in particular to an enhanced atomic fluorescence collecting device and a collecting method.
Background
At present, in the related experiments of atomic physics, thermal atomic beams or atomic groups are often adopted to carry out the fluorescence detection experiment of atoms. The atomic furnace generates atomic beams after being heated, the atomic beams enter a fluorescence collecting system or a fluorescence collecting device, photons are radiated after the atomic beams react with laser, and the photons are collected by the collecting device and detected to obtain atomic fluorescence spectral lines. However, the intensity, signal-to-noise ratio and resolution of the detected fluorescence line are directly determined by the fluorescence collection efficiency of the collection device.
The factors causing the low efficiency of atomic fluorescence collection mainly include: the intensity of the fluorescence emitted by the atoms is low, and the collection efficiency of a fluorescence collection system or device is not high. Both factors will result in lower signal-to-noise ratio of the fluorescence spectrum, affecting the spectrum detection resolution. In addition, most existing fluorescence detectors attempt to use a smaller photosensitive surface to increase the response speed, which is typically about 1mm2~1cm2Meanwhile, the gain of the detector is limited, and the phase change increases the requirement on the collection efficiency of the fluorescence collection device.
The atomic fluorescence collecting system in the prior art mainly comprises a laser, an atomic furnace, a vacuum device and an optical lens group consisting of a plurality of hemispherical reflecting surfaces. The laser and atomic beam emitted by the laser and the atomic furnace act in the vacuum device to generate atomic fluorescence, which is reflected and shaped by the optical lens group and converged on the photosensitive unit of the detection device for detection.
It can be seen that the atomic fluorescence collecting device and the implementation method in the prior art have the following problems in terms of structure and effect: (1) the number of optical lens groups in the fluorescence collection device is large, the size is large, and the flexibility of the device is poor; (2) the device has a large light-passing hole, lacks a stray light inhibition mechanism and is easily interfered by background stray light; (3) the existing atomic fluorescence collecting device mostly adopts a hemispherical reflecting surface, and can be obtained by analysis in an optical principle, and light emitted by the center of a sphere returns to the center of the sphere after being reflected, so that the effective collection of radiation photons cannot be realized. The traditional fluorescence collection method mostly adopts a vacuum device to match with an optical lens group for fluorescence collection, laser and atomic beams act on the vacuum device, the optical lens group is used for convergence and reshaping of fluorescence, functions of all parts are separated, and complexity of an atomic fluorescence collection system is increased to a certain extent. In the collecting system, the vacuum device and the optical lens group are arranged at a larger distance, and the stereoscopic divergence angle of the fluorescence becomes smaller, so that the fluorescent light is incompletely collected. In addition, most methods cannot perform atomic beam collimation, and cannot be applied to atomic physical experiments with high requirements on atomic beam collimation.
Disclosure of Invention
The application provides an enhanced atomic fluorescence collecting device and a collecting method, which are used for solving the problems in the prior art, reducing the size, reducing the stray light interference, improving the flexibility, reducing the stray light interference such as background light and the like, and realizing the effective collection of radiation photons.
The application provides an enhanced atomic fluorescence collecting device, which comprises a shell (1), wherein a fluorescence detection hole (2), an atomic beam collimation hole (3) and a laser beam collimation hole (4) are formed in the shell (1); an ellipsoidal reflecting surface (5) and a hemispherical reflecting surface (6) are arranged on the inner wall of the shell (1).
According to the enhanced atomic fluorescence collecting device, the ellipsoidal reflecting surface (5) and the hemispherical reflecting surface (6) are adopted to collect the atomic fluorescence, and compared with the existing hemispherical collecting device, the enhanced atomic fluorescence collecting device effectively improves the fluorescence collecting efficiency in principle; and a lens is not needed, so that the complexity of the system is reduced; theoretically, the radiated photons can be emitted from the fluorescence detection hole (2) and detected by the detector (9) only by reflecting twice in the collecting device at most.
The enhanced atomic fluorescence collection device can also preferably arrange the fluorescence detection hole (2) on the top wall of the shell (1).
At the moment, the fluorescence detection hole (2) is positioned above the light path plane, so that the interference of atomic fluorescence to other detection areas is avoided, and an isolation effect is achieved.
It is also preferred that the atom beam collimating aperture (3) and the laser beam collimating aperture (4) are symmetrically arranged on the front and back side walls of the housing (1).
Therefore, fluorescence collection can be carried out in the front direction and the rear direction, so that the detection regions can be conveniently cascaded, and the flexibility of the device is enhanced.
It is also preferable that the focal point F1 of the ellipsoidal reflecting surface (5) coincides with the spherical center of the hemispherical reflecting surface (6), and the focal point F2 of the ellipsoidal reflecting surface (5) is located above the fluorescence detection hole (2).
Thus, the fluorescent beam is reflected by the ellipsoidal reflecting surface (5) and then is converged to a focus F2; the fluorescent beam firstly returns to a focus F1 after being reflected by the hemispherical reflecting surface (6), then is reflected by the ellipsoidal reflecting surface (5) through a focus F1 and is converged at a focus F2; the light beam passes directly through the fluorescent detection aperture (2).
It is also preferable that the intersection point of the central connecting line of the atom beam collimation hole (3) and the laser beam collimation hole (4) coincides with the focus F1 of the ellipsoidal reflecting surface (5).
Thus, the atom light beam and the laser light beam enter the enhanced atomic fluorescence collecting device through the centers of the atom beam collimating hole (3) and the laser beam collimating hole (4) respectively, and generate fluorescence through interaction at the focus F1 of the ellipsoidal reflecting surface (5).
It is also preferable that the housing (1) has a longitudinal cylindrical shape.
It is also preferable that the bottom of the housing (1) is provided with a mounting hole (10). The enhanced atomic fluorescence collection device can be installed into a corresponding optical system through the installation card hole (10). If the optical system is provided with the installation clamping columns, the installation clamping columns can be inserted into the installation clamping holes (10) to be clamped, so that the shell (1), namely the enhanced atomic fluorescence collection device, can be installed.
It is also preferred that the laser beam collimating aperture (4) is a circular aperture.
The collection method of the enhanced atomic fluorescence collection device comprises the following steps:
heating the atom heating furnace (8) and then spraying atom beams;
placing the enhanced atomic fluorescence collecting device on the atomic beam passing path, enabling an atomic beam to pass through the center of an atomic beam collimation hole (3) and enter the enhanced atomic fluorescence collecting device, and simultaneously adjusting the incidence direction of a laser beam emitted by a laser (7) to enable the laser to be incident into the enhanced atomic fluorescence collecting device from the center of a laser beam collimation hole (4) of the enhanced atomic fluorescence collecting device; the atomic beams and the laser beams generate fluorescence after acting in the enhanced atomic fluorescence collecting device, and the fluorescence is converged at the fluorescence detection hole (2) after being reflected by the ellipsoidal reflecting surface (5) and the hemispherical reflecting surface (6). Subsequent experiments such as fluorescence detection can be performed.
The collection method of the enhanced atomic fluorescence collection device of the present application may also be preferable,
symmetrically arranging an atom beam collimation hole (3) and a laser beam collimation hole (4) on the front side wall and the rear side wall of the shell (1);
when the atomic beams and the laser beams enter the enhanced atomic fluorescence collecting device through the atomic beam collimating holes (3) and the laser beam collimating holes (4), the incident angles of the atomic beams and the laser beams are judged according to the atomic beam collimating holes (3) and the laser beam collimating holes (4) which are symmetrical on the side walls, and collimation is adjusted according to the incident angles of the atomic beams and the laser beams, so that the atomic beams and the laser beams are transmitted along a preset direction.
The enhanced atomic fluorescence collecting device and the collecting method can achieve the following beneficial effects:
according to the enhanced atomic fluorescence collecting device, the action points of the laser beams and the atomic beams are arranged in the collecting device, an additional lens device is not needed, the space is saved, the complexity of the system is reduced, and the cost is saved; the atomic beam collimation function is added, and the atomic beam collimation device can be used for atomic physical experiments with higher requirements on atomic beam collimation; the interference of ambient stray light can be effectively shielded; the method can cascade a plurality of detection areas, and enhances the flexibility of a collection method; the method is suitable for experimental systems of atomic beam frequency standard, fountain atomic clock, cold atom physics and the like. The collection method of the enhanced atomic fluorescence collection device can reduce the volume, and increases the solid emission angle and improves the atom collection rate through the geometric structures and the reflection characteristics of the ellipsoidal reflecting surface and the hemispherical reflecting surface; the method can collimate the light beam without a lens group, has a certain self-focusing function, has simple and flexible steps, can realize multi-stage cascade of the detection area, and has stronger engineering practicability and operability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a perspective view of the internal structure of an enhanced atomic fluorescence collection device of the present application.
FIG. 2 is a schematic side cross-sectional view of an enhanced atomic fluorescence collection device of the present application.
Fig. 3 is a schematic diagram illustrating the operation of the collection method of the enhanced atomic fluorescence collection device according to the present application.
In the figure, 1 is a shell, 2 is a fluorescence detection hole, 3 is an atomic beam collimation hole, 301 is an atomic beam light-passing hole, 4 is a laser beam collimation hole, 401 is a laser beam light-passing hole, 5 is an ellipsoidal reflecting surface, 6 is a hemispherical reflecting surface, 100 is a first beam of fluorescence, 200 is a second beam of fluorescence, 300 is a third beam of fluorescence, 7 is a laser, 8 is an atomic heating furnace, 9 is a detector, and 10 is a mounting clamp hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Example 1
An enhanced atomic fluorescence collecting device, see fig. 1, comprises a housing 1, wherein a fluorescence detection hole 2, an atomic beam collimation hole 3 and a laser beam collimation hole 4 are arranged on the housing 1; referring to fig. 2, an ellipsoidal reflecting surface 5 and a hemispherical reflecting surface 6 are provided on the inner wall of the housing 1.
According to the enhanced atomic fluorescence collecting device, the ellipsoidal reflecting surface 5 and the hemispherical reflecting surface 6 are adopted to collect atomic fluorescence, and compared with the existing hemispherical collecting device, the fluorescence collecting efficiency is effectively improved in principle; and a lens is not needed, so that the complexity of the system is reduced; theoretically, the emitted photons can be emitted from the fluorescent detection hole 2 and detected by the detector only by reflecting twice in the collecting device at most. The fluorescent photon radiation point is positioned in the device, so that the interference of external stray light can be effectively shielded, the path for the external stray light to enter the collecting device is limited, and the stray light entering the device can not be collected into the fluorescent detection hole 2. The reflective inner walls of the ellipsoidal 5 and hemispherical 6 reflective surfaces of the housing 1 are preferably plated with high-reflectivity gold or aluminum films to enhance the specular reflection effect. The housing 1 is preferably a metal housing. For example, the curvature radius of the ellipsoidal reflecting surface 5 is 4.95mm to 94.33mm, and the curvature radius of the hemispherical reflecting surface 6 is 11.00mm to 87.71 mm.
Example 2
The enhanced atomic fluorescence collecting device of embodiment 1, further, may further include a fluorescence detection hole 2 disposed on the top wall of the housing 1.
At the moment, the fluorescence detection hole 2 is positioned above the light path plane, so that the interference of atomic fluorescence with other detection areas is avoided, and an isolation effect is achieved.
Further, the atom beam collimating hole 3 and the laser beam collimating hole 4 are symmetrically disposed on the front and rear side walls of the housing 1.
Therefore, fluorescence collection can be carried out in the front direction and the rear direction, so that the detection regions can be conveniently cascaded, and the flexibility of the device is enhanced.
Further, the focus F1 of the ellipsoidal reflecting surface 5 coincides with the spherical center of the hemispherical reflecting surface 6, and the focus F2 of the ellipsoidal reflecting surface 5 is located above the fluorescence detection hole 2.
Thus, the fluorescent beam is reflected by the ellipsoidal reflecting surface 5 and then is converged to F2; the fluorescent beam firstly returns to the F1 position after being reflected by the hemispherical reflecting surface 6, then is reflected by the ellipsoidal reflecting surface 5 through the F1 and is converged at the focus F2; the fluorescent beam passes directly through the fluorescent detection well 2.
A focus F1, which is preferably the coincidence of the spherical centers of the ellipsoidal reflecting surface 5 and the hemispherical reflecting surface 6, coincides with the luminous point of the atomic radiation photon, and the other focus F2 is right above the fluorescence detection hole 2 at the top of the enhanced atomic fluorescence collection device shell 1; then the light radiated from the vicinity of the focus F1 of the ellipsoidal reflecting surface 5 by the atomic beam can be reflected by the ellipsoidal reflecting surface 5 or the hemispherical reflecting surface 6, and converged to the focus F2; photons radiated towards the top through the fluorescence detection hole 2 can be directly collected by a photoelectric device such as an integral lens group or a detector 9 outside the enhanced atomic fluorescence collection device; for photons radiated to the side surface or the lower surface, the photons are reflected by the ellipsoidal reflecting surface 5 and then directly converged to the focus F2 of the ellipsoidal reflecting surface 5, and the photons are collected by photoelectric devices such as a shaping lens or a detector 9 outside the enhanced atomic fluorescence collecting device; the photons radiated obliquely upwards are reflected by the hemispherical reflecting surface 6, then return to the focus F1 of the ellipsoidal reflecting surface 5, and are reflected to the focus F2 by the ellipsoidal reflecting surface 5, and are collected by photoelectric devices such as the shaping lens group or the detector 9 outside the enhanced atomic fluorescence collecting device.
Further, the intersection point of the central connecting lines of the atom beam collimating hole 3 and the laser beam collimating hole 4 coincides with the focal point F1 of the ellipsoidal reflecting surface 5.
Thus, the atom beam and the laser beam enter the enhanced atomic fluorescence collecting device through the centers of the atom beam collimating hole 3 and the laser beam collimating hole 4 respectively, and generate fluorescence by interaction at the focus F1 of the ellipsoidal reflecting surface 5.
Further, the housing 1 may have a longitudinal cylindrical shape.
Still further, the bottom of the housing 1 is provided with a mounting hole 10. The enhanced atomic fluorescence collecting device can be installed in a corresponding optical system through the installation card hole 10 to ensure the installation accuracy. For example, the mounting hole 10 is a circular hole having a diameter of 6 mm. The number of the mounting card holes 10 may be four, and are distributed to be located at four corners of the rectangle.
Still further, the fluorescence detection hole 2 may be a circular hole. The laser beam collimation hole 4 is a round hole to ensure that laser spots pass through without damage. For example, the diameter of the laser beam collimation aperture 4 is 14 mm.
The atomic beam collimation hole 3 can be rectangular, and the sizes of the atomic beam collimation hole 3 in two directions of the length and the width can be changed according to different test requirements so as to ensure that atoms and laser interact as much as possible; the width of the atom beam collimating aperture 3 is 4mm, for example.
FIG. 1 is a perspective view of the internal structure of an enhanced atomic fluorescence collecting device, which shows the collecting process of three fluorescence beams, wherein a first fluorescence beam 100 is reflected by an ellipsoidal reflecting surface 5 and then converged to a focus F2 of the ellipsoidal reflecting surface 5; the second beam of fluorescent light 200 is reflected by the hemispherical reflecting surface 6 and then returns to the focus F1 of the ellipsoidal reflecting surface 5, and is reflected by the ellipsoidal reflecting surface 5 through the focus F1 of the ellipsoidal reflecting surface 5 and converged at the focus F2 of the ellipsoidal reflecting surface 5; the third beam of fluorescence light 300 passes directly through the fluorescence detection well 2.
Fig. 2 is a schematic side cross-sectional view of an enhanced atomic fluorescence collection device, i.e. a cross-sectional view thereof, and the fluorescence collection principle of the enhanced atomic fluorescence collection device is as follows: laser beams and atomic beams enter the enhanced atomic fluorescence collecting device through the atomic beam collimating holes 3 and the laser beam collimating holes 4 respectively, atomic transition occurs at a focus F1 of the ellipsoidal reflecting surface 5 to generate fluorescence beams, fluorescence photons are emitted to the periphery, a first beam of fluorescence 100 and a second beam of fluorescence 200 are taken as an example for explanation, and the fluorescence beam of the first beam of fluorescence 100 directly reaches the focus F2 after being reflected by the ellipsoidal reflecting surface 5; the second beam of fluorescent light 200 is reflected by the hemispherical reflective surface 6 and returns to the focal point F1 of the ellipsoidal reflective surface 5, and is reflected by the ellipsoidal reflective surface 5 through the focal point F1 and converged at the focal point F2.
Example 3
The collection method of the enhanced atomic fluorescence collection device of the above embodiment, referring to fig. 3, includes the following steps:
heating the atom heating furnace 8 and then spraying atom beams;
placing the enhanced atomic fluorescence collecting device on the atomic beam passing path, enabling an atomic beam to pass through the center of an atomic beam collimation hole 3 and enter the enhanced atomic fluorescence collecting device, and simultaneously adjusting the incidence direction of a laser beam emitted by a laser 7, so that the laser is incident into the enhanced atomic fluorescence collecting device from the center of a laser beam collimation hole 4 of the enhanced atomic fluorescence collecting device; the atomic beams and the laser beams generate fluorescence after acting in the enhanced atomic fluorescence collecting device, and the fluorescence is converged at the fluorescence detection hole 2 after being reflected by the ellipsoidal reflecting surface 5 and the hemispherical reflecting surface 6. Subsequent experiments such as fluorescence detection can be performed.
Specifically, in an atomic beam type experiment system, an atomic furnace is heated to emit an atomic beam, the enhanced atomic fluorescence collecting device is arranged at a proper distance in front of an atomic furnace mouth, the center of the atomic furnace mouth is just opposite to the center of an atomic beam collimation hole 3, meanwhile, the center of a laser beam collimation hole 4 of the enhanced atomic fluorescence collecting device is aligned to the light passing direction of a laser, and laser enters the enhanced atomic fluorescence collecting device through the center of the laser beam collimation hole 4;
when the atomic beam and the laser beam respectively pass through the atomic beam collimation hole 3 and the laser beam collimation hole 4 to enter the enhanced atomic fluorescence collecting device, adjusting the symmetrical atomic beam collimation hole 3 and the laser beam collimation hole 4 to enable the atomic beam and the laser beam to respectively pass through the centers of the atomic beam collimation hole 3 and the laser beam collimation hole 4, and collimating the atomic beam;
after the fluorescence is collected by the enhanced atomic fluorescence collecting device, an integer lens set or a photoelectric device such as a detector 9 is arranged at the top end of the enhanced atomic fluorescence collecting device so as to carry out integer or detection on the collected fluorescence.
Example 4
The collection method of the enhanced atomic fluorescence collection device according to example 3, further,
symmetrically arranging an atom beam collimation hole 3 and a laser beam collimation hole 4 on the front side wall and the rear side wall of the shell 1;
when the atomic beams and the laser beams enter the enhanced atomic fluorescence collecting device through the atomic beam collimating holes 3 and the laser beam collimating holes 4 respectively, judging the incident angles of the atomic beams and the laser beams according to the atomic beam collimating holes 3 and the laser beam collimating holes 4 which are symmetrical on the side walls, and adjusting collimation according to the incident angles of the atomic beams and the laser beams to enable the atomic beams and the laser beams to be transmitted along a preset direction.
FIG. 3 is a schematic diagram of the collection method of the enhanced atomic fluorescence collection device, wherein the fluorescence collection method is as follows:
the laser beam emitted by the laser 7 and the atomic beam sprayed by the atomic heating furnace 8 respectively enter the enhanced atomic fluorescence collecting device through the centers of the laser beam collimating hole 3 and the atomic beam collimating hole 4. Adjusting an atom beam light-passing hole 301 and a laser beam light-passing hole 401 corresponding to the laser beam collimation hole 3 and the atom beam collimation hole 4, enabling the laser beam and the atom beam to be emitted along the centers of the atom beam light-passing hole 301 and the laser beam light-passing hole 401 respectively, collimating the atom beam and the laser beam, enabling the atom beam and the laser beam to generate fluorescence under the internal action of the enhanced atomic fluorescence collection device, converging the fluorescence in a fluorescence detection hole 2 after reflection, and placing a detector 9 above the fluorescence detection hole 2 to detect the fluorescence.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (6)
1. An enhanced atomic fluorescence collecting device comprises a shell (1), and is characterized in that a fluorescence detection hole (2), an atomic beam collimation hole (3) and a laser beam collimation hole (4) are arranged on the shell (1); an ellipsoidal reflecting surface (5) and a hemispherical reflecting surface (6) are arranged on the inner wall of the shell (1); the focus F1 of the ellipsoidal reflecting surface (5) is coincided with the spherical center of the hemispherical reflecting surface (6); and the focus F1 coincident with the sphere center of the hemispherical reflecting surface (6) is coincident with the luminous point of the atomic radiation photon; the fluorescent detection hole (2) is arranged on the top wall of the shell (1); the atomic beam collimation hole (3) and the laser beam collimation hole (4) are symmetrically arranged on the front side wall and the rear side wall of the shell (1); the reflecting inner walls of the ellipsoidal reflecting surface (5) and the hemispherical reflecting surface (6) of the shell (1) are plated with gold films or aluminum films; the focus F2 of the ellipsoidal reflecting surface (5) is positioned above the fluorescence detection hole (2), and the intersection point of the central connecting line of the atomic beam collimation hole (3) and the laser beam collimation hole (4) is superposed with the focus F1 of the ellipsoidal reflecting surface (5); the curvature radius of the hemispherical reflecting surface (6) is in a range of 11.00 mm-87.71 mm.
2. An enhanced atomic fluorescence collection device according to claim 1, wherein the housing (1) is of a longitudinal cylindrical shape.
3. An enhanced atomic fluorescence collection device according to claim 1, wherein the bottom of the housing (1) is provided with mounting holes (10).
4. An enhanced atomic fluorescence collection device according to claim 1, wherein the laser beam collimation aperture (4) is a circular aperture.
5. A method of fluorescence collection using the enhanced atomic fluorescence collection device of any one of claims 1 to 4, comprising the steps of:
heating the atom heating furnace (8) and then spraying atom beams;
placing the enhanced atomic fluorescence collecting device on the atomic beam passing path, enabling an atomic beam to pass through the center of an atomic beam collimation hole (3) and enter the enhanced atomic fluorescence collecting device, and simultaneously adjusting the incidence direction of a laser beam emitted by a laser (7) to enable the laser to be incident into the enhanced atomic fluorescence collecting device from the center of a laser beam collimation hole (4) of the enhanced atomic fluorescence collecting device; the atomic beams and the laser beams generate fluorescence after acting in the enhanced atomic fluorescence collecting device, and the fluorescence is converged at the fluorescence detection hole (2) after being reflected by the ellipsoidal reflecting surface (5) and the hemispherical reflecting surface (6).
6. The method of claim 5, further comprising the steps of;
symmetrically arranging an atom beam collimation hole (3) and a laser beam collimation hole (4) on the front side wall and the rear side wall of the shell (1);
when the atomic beams and the laser beams enter the enhanced atomic fluorescence collecting device through the atomic beam collimating holes (3) and the laser beam collimating holes (4), the incident angles of the atomic beams and the laser beams are judged according to the atomic beam collimating holes (3) and the laser beam collimating holes (4) which are symmetrical on the side walls, and collimation is adjusted according to the incident angles of the atomic beams and the laser beams, so that the atomic beams and the laser beams are transmitted along a preset direction.
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| CN114397280A (en) * | 2021-12-06 | 2022-04-26 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Large solid angle fluorescence collection optical system |
| CN114324272B (en) * | 2021-12-27 | 2023-09-22 | 兰州大学 | Ion beam fluorescence detection device and method for 4 pi solid angle |
| CN114659470A (en) * | 2022-03-23 | 2022-06-24 | 北京无线电计量测试研究所 | Device and method for measuring atomic beam collimation characteristics of calcium atomic beam optical clock |
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| CN103941382A (en) * | 2014-04-04 | 2014-07-23 | 浙江卷积科技有限公司 | Collector for faint light in three-dimensional space |
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