CN218767620U - Optical coupling miniaturized optical system for interaction of laser and atomic gas chamber - Google Patents
Optical coupling miniaturized optical system for interaction of laser and atomic gas chamber Download PDFInfo
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- CN218767620U CN218767620U CN202222157134.7U CN202222157134U CN218767620U CN 218767620 U CN218767620 U CN 218767620U CN 202222157134 U CN202222157134 U CN 202222157134U CN 218767620 U CN218767620 U CN 218767620U
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Abstract
The utility model provides a miniaturized optical system of optical coupling for laser and atom air chamber interact, two bundles of laser respectively through leading-in near atom air chamber behind the fiber waveguide coupling, and pass atom air chamber in opposite directions behind the lens collimation subassembly collimation one-tenth parallel light through the integral type respectively, one of them bundle of pumping laser is from fiber waveguide output and pass atom air chamber behind the lens collimation subassembly again after the spectroscope reflection, another bundle of probe light is also from fiber output and squeeze into the detector with space light or fiber waveguide transmission form behind the lens collimation subassembly after the straight line passes atom air chamber again, pumping laser and probe laser get into atom air chamber through lens collimation subassembly again after fiber transmission respectively, and three fiber waveguide, three lens collimation subassemblies and atom air chamber of group, the spectroscope, the connecting piece, each device head and the tail seamless solid phase such as detector is connected integratively, the overall structure is compact and very stable.
Description
Technical Field
The utility model relates to a laser and atom air chamber interact field, concretely relates to laser and atom air chamber interact's miniaturized optical system of optical coupling.
Background
In the fields of quantum computation, quantum simulation, quantum sensing, optical precision measurement, atomic physics, cold atomic physics and the like, a large number of structures with interaction of laser and atoms are needed, when narrow-linewidth pump laser interacts with atoms in an atomic gas chamber, photoelectric detection signals reflecting the laser, the atomic structure and quantum characteristics can be obtained by observing the photoelectric conversion condition absorbed by detection laser, and quantum control can also be carried out. When pump laser, detection laser, atomic state and external physical influence factors are changed, photoelectric detection signal change conditions related to the factors can be obtained, and the photoelectric detection signal change conditions are taken as basic physical means to promote the development of quantum computation, quantum simulation, quantum sensing and optical precision measurement directions.
At present, the interaction of laser and an atomic gas chamber is used in the fields of quantum computation and simulation, quantum sensing and optical precision measurement, atomic physics, cold atomic physics and the like, so that various physical factor information is extracted or the quantum computation control is realized. For example, when the microwave field is measured in a rydberg atom system, two beams of light, namely one pumping light and one detecting light, are required to be respectively driven into atoms from opposite directions to act on the atoms, an EIT signal can be obtained by measuring the absorption condition of the atoms in the rydberg state through the detecting light, when an external microwave field appears near an atom gas chamber, the EIT signal can be split, and the characteristics of the external microwave field, such as frequency, amplitude and the like, can be calculated through the signal; in the system, two paths of laser are needed to interact with the atomic gas chamber through the optical coupling system, and then the optical detector is used for absorbing and detecting the detection laser to obtain an absorption signal. In quantum computation and simulation, interaction of multi-path laser and atoms or ions in a gas chamber is also used for quantum manipulation to realize a quantum logic gate.
The prior art has two kinds: 1. two beams of laser pass through the coupling input and coupling output of the lens collimation assembly through space light and oppositely pass through the atomic gas chamber, wherein one beam of pumping laser passes through the atomic gas chamber after being reflected by the beam splitter, and the other beam of detection light is linearly transmitted through the atomic gas chamber and then is driven into the detector. The lens collimation components of the pump laser and the detection laser in the scheme enter the atom air chamber in a space light mode, and the two groups of lens collimation components and the parts such as the atom air chamber, the spectroscope and the detector are independently, loosely and fixedly arranged, so that the structure is large and unstable. 2. Two beams of laser respectively pass through the optical fiber introduction, the coupling input and the coupling output of the lens collimation assembly, and oppositely pass through the atomic gas chamber, wherein one beam of pumping laser is output from the optical fiber and passes through the lens collimation assembly, then passes through the atomic gas chamber in a spatial light form after being reflected by the beam splitter, and the other beam of probe light is output from the optical fiber, passes through the atomic gas chamber in a spatial light form after passing through the lens collimation assembly, and then is transmitted into the detector in a spatial light or optical fiber transmission form. The pumping laser and the detection laser in the scheme are transmitted by the optical fibers respectively and then enter the atomic gas chamber through the lens collimation assembly, and the two optical fibers, the two groups of lens collimation assemblies, the atomic gas chamber, the spectroscope, the detector and other devices are independently, loosely and fixedly arranged, and have larger and unstable structures. The devices in the two existing schemes are independently, loosely and fixedly arranged, occupy larger size, have air gaps, and can change relative positions and light transmission directions due to stress deformation, thermal expansion and cold contraction, so that the instability of measured absorption signals is influenced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model discloses an it is independent loose fixed unstable that leads to overcome each device in two kinds of above schemes, and occupies the great shortcoming of volume, and we become together fixed with each device through solid-state seamless lug connection mode to the volume diminishes and integrative miniaturization is stable.
(II) technical scheme
In order to achieve the above object, a miniaturized optical system for optical coupling of laser and atomic gas chamber interaction is provided, the system relates to pump laser, detection laser, optical fiber waveguide for coupling input and output, lens alignment assembly, spectroscope, atomic gas chamber, connector, detector, etc. Two beams of laser are respectively guided into the vicinity of the atomic air chamber after being coupled through the optical fiber waveguide, and are respectively collimated into parallel light through the integrated lens collimation assembly and then oppositely pass through the atomic air chamber, wherein one beam of pump laser is output from the optical fiber waveguide, passes through the atomic air chamber after being reflected by the spectroscope after passing through the lens collimation assembly, and the other beam of detection light is output from the optical fiber, linearly passes through the atomic air chamber after passing through the lens collimation assembly and then is input into the detector in a space light or optical fiber waveguide transmission mode. The pumping laser and the detection laser in the scheme are respectively transmitted by optical fibers and then enter the atomic gas chamber through the lens collimation assembly, and the three optical fiber waveguides, the three groups of lens collimation assemblies, the atomic gas chamber, the spectroscope, the connecting piece, the detector and other devices are connected end to end in a seamless solid-state manner and are connected into a whole in a solid-state manner through welding, fusion welding, adhesive bonding or molecular bonding force. The whole structure is compact, small and stable. The set of optical coupling miniaturized optical system can be used for optical path parts in the fields of rydberg atoms, quantum computation and quantum simulation, quantum sensing and optical precision measurement, atomic physics, cold atomic physics and the like.
The utility model provides an optical coupling miniaturized optical system for interaction of laser and atomic gas chamber, which comprises an atomic gas chamber (1), a spectroscope (2) and a connecting piece (3) connected with the spectroscope, wherein the connecting piece (3) comprises a first connecting piece (3-1), a second connecting piece (3-2) and a third connecting piece (3-3); the second connecting piece (3-2) and the third connecting piece (3-3) are respectively positioned at two sides of the spectroscope (2); the atomic gas chamber (1) and the spectroscope (2) are connected and fixed by adopting adhesive bonding or molecular bonding force or welding;
the first connecting piece (3-1) is connected with the atomic gas chamber (1) and connected with a first sleeve (8), and the first sleeve (8) is used for packaging a first fiber waveguide (9) and a first lens collimation assembly (7) together;
the second connecting piece (3-2) is connected with the spectroscope (2) and is also connected with a second sleeve (11), and the second sleeve (11) packages a second fiber waveguide (12) and a second lens collimation assembly (10) together; the second optical fiber waveguide (12) is also connected with a third lens collimation assembly (13) and a detector (14);
the third connecting piece (3-3) is connected with the spectroscope (2) and is also connected with a third sleeve (5), and the fourth lens collimation assembly (4) and a third optical fiber waveguide (6) are packaged together by the third sleeve (5);
the detection laser is collimated into parallel light by a first lens collimation assembly (7) after being output by a first optical fiber waveguide (9), then passes through a first connecting piece (3-1), enters an atomic gas chamber (1) and then is emitted, passes through the center of a spectroscope (2), then passes through a second connecting piece (3-2), is coupled into a second optical fiber waveguide (12) by a second lens collimation assembly (10), is coupled into the second optical fiber waveguide (12) by an incident detection laser (15), is output after being coupled into the second optical fiber waveguide (12), then is collimated by a third lens collimation assembly (13), and then is driven into a detector (14), and a laser signal is converted into an electric signal and is output; the pump laser (17) is guided in by the third optical fiber waveguide (6), is output from the output end, is collimated by the fourth lens collimation component (4), is reflected by the reflecting surface of the spectroscope (2) through the third connecting piece (3-3), enters the atomic air chamber (1), and is propagated in opposite directions with the incident detection laser (15) and overlapped.
Optionally, the joints of the first fiber waveguide (9), the first lens collimation assembly (7), the first sleeve (8), the first connecting piece (3-1), the atomic gas chamber (1) and the joints of the spectroscope (2), the second connecting piece (3-2), the second lens collimation assembly (10), the second sleeve (11) and the second fiber waveguide (12) can be connected and fixed by adopting adhesive bonding or fusion welding or welding.
Optionally, the probing laser is a narrow linewidth or tunable laser, adjustable in power, adjustable in wavelength, adjustable in polarization direction, and input by the first fiber waveguide (9).
Optionally, the first optical fiber waveguide (9), the second optical fiber waveguide (12) and the third optical fiber waveguide (6) are single-mode or polarization-maintaining optical fiber waveguides, the output end and the input end are FC or SMA or bare fibers, and end caps can be provided, and the end caps are spherical, flat, inclined or conical; the first lens collimation assembly (7), the second lens collimation assembly (10), the third lens collimation assembly (13) and the fourth lens collimation assembly (4) are small focal length lenses or GRIN lenses or self-focusing lenses.
Optionally, the first optical fiber waveguide (9), the first sleeve (8), the first lens collimation assembly (7) and the first connecting piece (3-1) are connected in an FC flange or SMA flange or bare fiber mode and are connected and fixed in a welding, adhesive bonding or fusion welding mode; the third lens collimation assembly (13) and the detector (14) are fixedly connected by welding, adhesive bonding or an optical fiber flange plate.
Optionally, the center of the first connecting piece (3-1) is aligned with the center of the atomic gas chamber (1) and is fixedly connected in a welding, welding or adhesive bonding mode, and the direction of the incident detection laser (15) is adjusted before fixing so that light rays pass through the center line of the atomic gas chamber (1).
Optionally, the beam splitter (2) is a polarizing beam splitter prism or a non-polarizing beam splitter prism or a dichroic beam splitter or a narrow-band beam splitter or a partial reflector or a total reflector, and the shape of the beam splitter can be square or circular or prismatic or conical, and comprises a splitting plane for reflecting one beam of light and transmitting the other beam of light.
Optionally, the spectroscope (2) and the atomic gas chamber (1) are connected and combined through glue bonding, welding or molecular bonding force, and the spectroscope (2) and the second connecting piece (3-2) and the third connecting piece (3-3) on the right side and the upper side are connected and fixed through welding, welding or glue bonding.
Optionally, the ports where the incident detection laser (15), the emergent detection laser (16), and the pump laser (17) are located may be used as both a laser input port and an output port, where the directions of the two laser beams are: the detection light is input from the direction of the incident detection laser (15), the emergent detection laser (16) is output from the direction of the incident detection laser, and the pumping laser can be input from the arrow direction of the pumping laser (17), reflected by the light splitting surface and then passes through the atomic gas chamber (1); or the detection light is input from the direction of the incident detection laser (15), is reflected by the beam splitting surface and then is output from the opposite direction of the pumping laser (17), and the pumping light can be input from the opposite direction of the arrow of the emergent detection laser (16) and penetrates through the beam splitting surface and then passes through the atomic gas chamber (1).
Optionally, the atomic gas chamber (1) is round, square, cylindrical or prismatic, various atomic steam, inert gases or combined gases can be filled in the atomic gas chamber, the end face of the atomic gas chamber can be coated with an antireflection film or not, the atomic gas chamber can be internally coated with a substance for relieving inelastic collision, such as paraffin, the side face of the atomic gas chamber can be connected with a vacuumizing pump set or an atomic charging device or a vacuum gauge, or the atomic gas chamber can not be connected with the devices, the side face of the atomic gas chamber (1) is provided with a gas filling port (18) which is connected with a vacuum pump set (19) and an atomic source (20), and the atomic gas chamber (1) can be filled with proper atoms and gases according to requirements.
(III) advantageous effects
Compared with the prior art, the utility model discloses each device in the existing scheme in the past is independent loose fixed, and not only whole occupation volume is great, and has air gap each other for each device, can lead to relative position and light transmission direction between each other to change because of stress deformation and expend with heat and contract with cold like this to the influence is surveyed and is absorbed the unstability of light signal of telecommunication.
The utility model discloses an each device in the scheme is fixed together through solid-state seamless lug connection mode and becomes an organic whole to the volume diminishes and has improved integrative miniaturization stability greatly, and then obtains stable photoelectric detection signal.
Drawings
Fig. 1 is a schematic diagram of an optical coupling miniaturized optical system for laser interaction with an atomic gas cell according to an embodiment of the present invention.
In the figure: 1. an atomic gas cell; 2. a beam splitter; 3. a connecting member; a first connecting member 3-1; a second connecting member 3-2; a third connecting member 3-3;4. a fourth lens collimation assembly; 5. a third sleeve; 6. a third fiber waveguide; 7. a first lens collimating assembly; 8. a first sleeve; 9. a first fiber waveguide; 10. a second lens collimating assembly; 11. a second sleeve; 12. a second fiber waveguide; 13. a third lens collimating assembly; 14. a detector; 15. incidence of detection laser; 16. emitting detection laser; 17. pump laser 18. Gas charging port of atomic gas chamber; 19. a vacuum pump set; 20. atomic source
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a miniaturized optical system of optical coupling that is used for laser and atom air chamber to interact. As shown in fig. 1, the optical path structure specifically includes: the detection laser 15 is output by the first optical fiber waveguide 9, collimated into parallel light by the first lens collimation assembly 7, passes through the first connecting piece 3-1 and then enters the atomic gas chamber 1; the detection laser 15 is emitted from the atomic gas chamber 1, passes through the center of the spectroscope 2, passes through the second connecting piece 3-2, is coupled into the second optical fiber waveguide 12 through the second lens collimation assembly 10, is collimated through the third lens collimation assembly 13, and then is sent into the detector 14, so that a laser signal can be converted into an electric signal and output.
The first optical fiber waveguide 9 and the first lens collimation assembly 7 are packaged together by a first sleeve 8, the first sleeve 8 is connected with a first connecting piece 3-1, the first connecting piece 3-1 is connected with the atom air chamber 1, and the joints among the first optical fiber waveguide 9, the first lens collimation assembly 7, the first sleeve 8, the first connecting piece 3-1 and the atom air chamber 1 can be connected and fixed by adopting adhesive bonding or fusion welding or welding.
The connection and fixation method among the spectroscope 2, the second connecting piece 3-2, the second lens collimation component 10, the second sleeve 11 and the second optical fiber waveguide 12 is the same as the above;
the connection and fixation method between the second fiber waveguide 12 and the third lens collimation assembly 13 and the detector 14 is the same as the above. The atomic gas chamber 1 and the spectroscope 2 can be connected and fixed by adhesive bonding or molecular bonding force or welding.
The pump laser 17 is guided in by the third optical fiber waveguide 6, is output from the output end, is collimated by the fourth lens collimation component 4, is reflected by the reflecting surface of the spectroscope 2 by the third connecting piece 3-3, enters the atomic gas chamber 1, and is transmitted and overlapped with the incident detection laser 15 in opposite directions. The connection and fixation modes of the third optical fiber waveguide 6, the third sleeve 5, the fourth lens collimation component 4 and the third connecting piece 3-3 are the same as those of the first optical fiber waveguide 9, the first sleeve 8, the first lens collimation component 7 and the connecting piece 3. The connecting mode of the connecting piece 3 and the spectroscope 2 can be welding, gluing or welding.
The device 18 is a gas filling port of an atom gas chamber, 19 is a vacuum pump set, 20 is an atom source, the atom concentration in the atom gas chamber 1 can be controlled by the gas filling port 18, the vacuum pump set 19 and the atom source 20 of the atom gas chamber, and can also be closed at any time, or the gas filling port 18, the vacuum pump set 19 and the atom source 20 of the atom gas chamber can be removed and are not used.
The detection laser 15 is a narrow-linewidth or tunable laser, has adjustable power, adjustable wavelength and adjustable polarization direction, and is input by the fiber waveguide 9.
The first fiber waveguide 9, the second fiber waveguide 12 and the third fiber waveguide 6 are single-mode or polarization-maintaining fiber waveguides, the output end and the input end may be FC or SMA or bare fibers, or end caps may be provided, and the end caps may be spherical, flat, beveled or tapered. The connector 3 includes: a first connecting piece 3-1, a second connecting piece 3-2 and a third connecting piece 3-3. The input and output modes of the three laser fiber waveguides 9, 12 and 6 can be manufactured by the same process, and the connecting piece 3 can be manufactured by the same process.
The first lens collimation assembly 7, the second lens collimation assembly 10, the third lens collimation assembly 13 and the fourth lens collimation assembly 4 can be small focal length lenses or GRIN lenses or self-focusing lenses, etc.
The first optical fiber waveguide 9, the first sleeve 8, the first lens collimation assembly 7 and the first connecting piece 3-1 can be connected in an FC flange or SMA flange or bare fiber mode, and can be connected and fixed in a welding mode, an adhesive bonding mode or a fusion welding mode and the like. The first sleeve 8 can seal the first fiber waveguide 9 and the first lens collimation assembly 7 into a whole.
The center of the first connecting piece 3-1 is aligned with the center of the atomic gas chamber 1 and is fixedly connected in a fusion, welding or adhesive bonding mode, and the direction of the incident detection laser 15 is adjusted before fixing so that light rays pass through the center line of the atomic gas chamber 1.
The atomic gas chamber 1 can be made of various glass materials, can be round, square, cylindrical or prismatic, can be filled with various atomic steam, inert gases or combined gases, can be coated with an antireflection film or not on the end face of the atomic gas chamber, and can be coated with substances for relieving inelastic collision such as paraffin and the like inside the atomic gas chamber. The side surface can be connected with a vacuum pump group, an atom filling device, a vacuum gauge and the like, or can be not connected with the devices. The side surface of the atom air chamber 1 can be provided with an air charging port 18 which is connected with a vacuum pump set 19 and an atom source 20, and the atom air chamber 1 can be charged with proper amount of atoms and gases according to the requirement.
The beam splitter 2 can be a polarizing beam splitter prism or a non-polarizing beam splitter prism or a dichroic beam splitter or a narrow-band beam splitter or a partial reflector or a total reflector, can be square or circular or prismatic or conical in shape, and comprises a beam splitting surface capable of reflecting one beam of light and transmitting the other beam of light.
The spectroscope 2 and the atomic gas chamber 1 can be connected and combined through adhesive bonding or welding or molecular bonding force.
The spectroscope 2 and the connecting pieces 3-2 and 3-3 on the right side and the upper side can be connected and fixed in a welding, welding or gluing mode.
The trend of the two laser beams is as follows: the detection light can be input from the direction of the incident detection laser 15 and output from the direction of the emergent detection laser 16, and the pump laser can be input from the direction of the arrow of 17, reflected by the light splitting surface and then passes through the atomic gas chamber 1; or the detection light can be input from the direction of the incident detection laser 15, reflected by the beam splitting surface and then output from the opposite direction of the pump laser 17, and the pump light can be input from the opposite direction of the arrow of the emergent detection laser 16, penetrates through the beam splitting surface and then passes through the atomic gas chamber 1;
the ports where the incident detection laser 15, the emergent detection laser 16 and the pump laser 17 are located can be used as a laser input port and an output port.
The detection laser passes through the first optical fiber waveguide 9, the atom air chamber 1 and the spectroscope 2, then passes through the second connecting piece 3-2, the second lens collimation component 10, the second sleeve 11 and the second optical fiber waveguide 12, is collimated and then is transmitted to the third lens collimation component 13 and the photoelectric detector 14, and can convert the laser signal into an electric signal and output the electric signal.
The third lens collimation assembly 13 and the detector 14 may be fixed by welding, adhesive bonding or fiber flange connection.
All the devices 1-20 can be connected into a whole, and the device is stable, firm, small in size, portable and convenient to use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An optical coupling miniaturized optical system for interaction of laser and an atomic gas chamber is characterized by comprising an atomic gas chamber (1), a spectroscope (2) and a connecting piece (3) connected with the spectroscope, wherein the connecting piece (3) comprises a first connecting piece (3-1), a second connecting piece (3-2) and a third connecting piece (3-3); the second connecting piece (3-2) and the third connecting piece (3-3) are respectively positioned at two sides of the spectroscope (2); the atomic gas chamber (1) and the spectroscope (2) are connected and fixed by adopting adhesive bonding or molecular bonding force or welding;
the first connecting piece (3-1) is connected with the atomic gas chamber (1) and connected with a first sleeve (8), and the first sleeve (8) is used for packaging a first fiber waveguide (9) and a first lens collimation assembly (7) together;
the second connecting piece (3-2) is connected with the spectroscope (2) and is also connected with a second sleeve pipe (11), and the second sleeve pipe (11) packages a second fiber waveguide (12) and a second lens collimation assembly (10) together; the second optical fiber waveguide (12) is also connected with a third lens collimation assembly (13) and a detector (14);
the third connecting piece (3-3) is connected with the spectroscope (2) and is also connected with a third sleeve (5), and the fourth lens collimation assembly (4) and a third optical fiber waveguide (6) are packaged together by the third sleeve (5);
the detection laser is collimated into parallel light by a first lens collimation assembly (7) after being output by a first optical fiber waveguide (9), then passes through a first connecting piece (3-1), enters an atomic gas chamber (1) and then is emitted, passes through the center of a spectroscope (2), then passes through a second connecting piece (3-2), is coupled into a second optical fiber waveguide (12) by a second lens collimation assembly (10), is coupled into the second optical fiber waveguide (12) by an incident detection laser (15), is output after being coupled into the second optical fiber waveguide (12), then is collimated by a third lens collimation assembly (13), and then is driven into a detector (14), and a laser signal is converted into an electric signal and is output; the pumping laser (17) is guided in by a third optical fiber waveguide (6), is output from the output end, is collimated by a fourth lens collimation component (4), is reflected by the reflecting surface of the spectroscope (2) by a third connecting piece (3-3), enters the atomic gas chamber (1), and is propagated and superposed with the incident detection laser (15) in opposite directions.
2. The optical coupling miniaturized optical system according to claim 1, wherein the joints between the first optical fiber waveguide (9), the first lens alignment assembly (7), the first sleeve (8), the first connector (3-1), the atomic gas chamber (1) and the joints between the spectroscope (2), the second connector (3-2), the second lens alignment assembly (10), the second sleeve (11) and the second optical fiber waveguide (12) are fixedly connected by gluing or welding or soldering.
3. An optical coupling miniaturised optical system according to claim 1 characterised in that the probing laser is a narrow linewidth or tunable laser, adjustable in power, tunable in wavelength, adjustable in polarization direction and input by the first fibre waveguide (9).
4. The optical coupling miniaturised optical system according to claim 1 characterised in that the first (9), second (12) and third (6) fibre waveguides are single-mode or polarization-maintaining fibre waveguides, the output and input ends are FC or SMA or bare fibres or are capped, the end caps are spherical or flat or tapered; the first lens collimation component (7), the second lens collimation component (10), the third lens collimation component (13) and the fourth lens collimation component (4) are small focal length lenses or GRIN lenses or self-focusing lenses.
5. The optical coupling miniaturized optical system according to claim 1, wherein the first optical fiber waveguide (9) is connected with the first sleeve (8), the first lens collimating assembly (7) and the first connector (3-1) by means of FC flange or SMA flange or bare fiber, and is connected and fixed by means of welding, gluing or fusion splicing; the third lens collimation assembly (13) and the detector (14) are fixedly connected by welding, gluing or an optical fiber flange.
6. The optical coupling miniaturization optical system of claim 1, characterized in that the center of the first connecting member (3-1) is aligned with the center of the atomic gas cell (1) and is fixedly connected in a welding, soldering or gluing manner, and the direction of the incident detection laser (15) is adjusted before fixing so that the light passes through the center line of the atomic gas cell (1).
7. An optical coupling miniaturised optical system according to claim 1 characterised in that the beam splitter (2) is a polarizing or non-polarizing beam splitter prism or a dichroic beam splitter or a narrowband beam splitter or a partially reflecting or total reflecting mirror, shaped as a square or circle or a prism or a cone, comprising a splitting plane, which reflects one beam and transmits the other.
8. The optical coupling miniaturized optical system according to claim 1, characterized in that the beam splitter (2) is connected and combined with the atomic gas cell (1) by means of glue bonding or fusion or soldering or molecular bonding force, and the beam splitter (2) is connected and fixed with the second connecting piece (3-2) and the third connecting piece (3-3) on the right side and the upper side by means of fusion, soldering or glue bonding.
9. The optically coupled miniaturized optical system of claim 1, wherein the ports at which the incident detection laser (15), the emergent detection laser (16), and the pump laser (17) are located can be used as both a laser input port and an output port, wherein the two laser beams are oriented: the detection light is input from the direction of the incident detection laser (15), the emergent detection laser (16) is output from the direction of the incident detection laser, and the pumping laser can be input from the arrow direction of the pumping laser (17), reflected by the light splitting surface and then passes through the atomic gas chamber (1); or the detection light is input from the direction of the incident detection laser (15), is reflected by the beam splitting surface and then is output from the opposite direction of the pumping laser (17), and the pumping light can be input from the opposite direction of the arrow of the emergent detection laser (16) and penetrates through the beam splitting surface and then passes through the atomic gas chamber (1).
10. The optical coupling miniaturization optical system according to any one of claims 1-9, characterized in that the atomic gas cell (1) is round, square, cylindrical or prismatic, and is filled with various atomic vapors or inert gases or combined gases, the end face of the atomic gas cell is coated with antireflection film or not, the inside is coated with non-elastic collision-relieving substance such as paraffin, the side is connected with a vacuum pump set or an atom filling device or a vacuum gauge, or is not connected with these devices, the side of the atomic gas cell (1) is provided with a gas filling port (18) connected with the vacuum pump set (19) and the atom source (20), and the atomic gas cell (1) can be filled with proper amount of atoms and gases according to the needs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222157134.7U CN218767620U (en) | 2022-08-16 | 2022-08-16 | Optical coupling miniaturized optical system for interaction of laser and atomic gas chamber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222157134.7U CN218767620U (en) | 2022-08-16 | 2022-08-16 | Optical coupling miniaturized optical system for interaction of laser and atomic gas chamber |
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| CN218767620U true CN218767620U (en) | 2023-03-28 |
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